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CONFIDENTIAL 4531/1SULIT
4531/1 PKSM Cawangan NSDK [Lihat sebelah
CONFIDENTIAL/SULIT
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MAKLUMAT UNTUK CALON
1. Kertas soalan ini mengandungi 50 soalan.
2. Jawab semua soalan.
3. Jawab dengan menghitamkan ruangan yang betul pada kertas jawapan.
4. Hitamkan satu ruangan sahaja bagi setiap soalan.
5. Sekiranya anda hendak menukar jawapan, padamkan tanda yang telah dibuat.
Kemudian hitamkan jawapan yang baru.
6. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.
7. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.
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The following information may be useful. The symbols have their usual meaning.
1. a =t
uv 15.
Power, P = energy
time
2. v2 = u2 + 2as 16. f
1
u
1+
v
1
3. s = ut +2
1at
217. =
D
ax
4. Momentum = mv 18.n = sin i
sin r
5. F = ma 19.n = real depth
apparent depth
6. Kinetic energy = mv2 20. Q = I t
7. Gravitational potential energy = mgh 21. V = IR
8. Elastic potential energy = Fx 22. Power, P = IV
9. =V
m23.
s
p
s
p
V
V
N
N
10. Pressure, P = hg 24. Efficiency =p
s
p
s
V
V
I
Ix 100%
11.Pressure , P =
A
F
25. g = 10 ms-2
12. Heat, Q = mc 26. E = mc2
13.T
pV= constant 27.
Linear magnification, m = v
u
14. v = f 28.Power of lens P = 1
f
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Each question is followed by three orfour options. Choose the best option for each
question then blacken the correct space on the answer sheet.
1 Which of the following unit is correct?
Manakah antara unit berikut betul?
Quantity SI unit
Kuantiti Unit SI
2 Diagram 1 shows a micrometer screw gauge.
Rajah 1 menunjukkan tolok skru mikrometer
What is the reading of the micrometer?
Berapakah bacaan mikrometer itu?
3 Density of mercury is 13600 kgm-3 which is equivalent to
Ketumpatan merkuri, 13600 kgm-3
adalah setara dengan
A Force kgms-2
Daya
B Density kgm-2
Ketumpatan
C Area m3
Luas
D Acceleration ms-1
Pecutan
A 6.00 mm
B 6.02 mmC 6.45 mmD 6.48 mm
A 0.136 gcm-3
B 1.36 x 10-2 gcm-3
C 1.36 x 10-3
gcm-3
D 13.6 gcm-3
Diagram 1
Rajah 1
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6 Diagram 4 shows two strips of a ticker tape. The arrow shows the direction of the
motion each ticker tape is pulled.Rajah 4 menunjukkan dua keratan pita detik. Anak panah menujukkan arah
gerakan pita itu ditarik.
Which of the following statement is true?Manakah antara pernyataan berikut adalah benar?
A Both strips undergoes constant accelerationKedua-dua keratan mengalami pecutan seragam
B The average velocities of both strips are the sameHalaju purata kedua-dua keratan adalah sama
C The time taken by strip Q is longer than that of strip P
Masa yang diambil oleh keratan Q lebih lama daripada oleh keratan P
D The distance travelled by strip Q is more than that of strip PJarak yang dilalui oleh keratan Q lebih jauh daripada oleh keratan P
Strip Q
Keratan Q
Strip PKeratan P
Diagram 4
Rajah 4
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7 Diagram 5 shows a graph of the force exerted on a spring against the extension of
the spring.Rajah 5 menunjukkan graf bagi daya yang dikenakan melawan pemanjangan
spring.
What is the elastic potential energy stored in the spring when it is stretched
for 6 cm?
Berapakah tenaga keupayaan elastik yang tersimpan di dalam spring apabila ia
diregangkan sebanyak 6 cm?
A 0.18 J
B 0.36 JC 18.0 J
D 36.0 J
8 Which of the following physical quantities of a freely falling object in a vacuum
will not change?Antara kuantiti fizikal bagi satu objek yang jatuh bebas dalam vakum yang
berikut tidak akan berubah?
A VelocityHalaju
B Momentum
Momentum
C AccelerationPecutan
D Kinetic energy
Tenaga kinetik
Force/N
Berat/N
0 2 4 6 Extension/cm
Pemanjangan/cm
6
Diagram 5
Rajah 5
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12 Diagram 9 shows a stone is being thrown upwards.Rajah 9 menunjukkan sebiji batu dibaling ke atas.
Which of the following quantities of the stone decreases before it reaches its
highest point?
Manakah antara kuantiti batu yang berikut akan berkurang sebelum batu itu
sampai ke paras tertingginya?
A Mass
Jisim
B WeightBerat
C Momentum
Momentum
D InersiaInersia
Diagram 9
Ra ah 9
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13 Diagram 10 shows a load of weight, W is kept in equilibrium by two strings.Rajah 10 menunjukkan satu beban mempunyai berat, W berada dalam keadaan
keseimbangan.
Which of the vector diagrams represent the forces T1, T2 and W acting
on the load?
Rajah vektor yang manakah mewakili T1, T2 dan W yang bertindak ke atas beban
tersebut?
A B
C D
load
T1
T2
60o
90o
W
Diagram 10
Rajah 10
60o
WT1
T2
60oT1W
T2
60o
T1
T2
60o W
T1
T2
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15 Diagram 12 shows a load hung from a spring balance is slowly submerged in water
until it is immersed completely.
Rajah 12 menunjukkan satu beban yang digantungkan pada neraca spring di
tenggelamkan perlahan-lahan ke dalam air sehingga ia tenggelam sepenuhnya.
What will happen to the spring balance reading?
Apakah akan berlaku pada bacaan neraca spring?
A decreases until zero
berkurang sehingga sifar
B remains unchangedtetap tidak berubah
C decreases until reaches a constant valueberkurang hingga mencapai satu nilai tetap
16 An air bubble is at a depth of 5 metre below the surface of a lake. What is the
pressure of the bubble due to the depth of water?
(Given the density of the water is 1 000 kg m-3
)
Satu gelembong udara pada kedalaman 5 meter di bawah permukaan tasik.Berapakah tekanan gelembung udara yang disebabkan oleh kedalaman air ?
{Diberi ketumpatan air ialah 1 000 kg m-3
}
A 5 x 10-2
Pa
B 5 x 10-3
PaC 5 x 10 3 Pa
D 5 x 104 Pa
Spring balance
Neraca s rin
water
air
load
beban
Diagram 12
Rajah 12
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17 Gas pressure exists because the gas moleculesTekanan gas wujud kerana molekul-molekul gas
A move randomly and freelybergerak secara rawak dan bebas
B move at the same velocity
bergerak pada halaju yang sama
C collides with the wall of the container produces change of momentum
berlanggar dengan dinding bekas menghasilkan perubahan momentum
D collides with one another in elastic collisions and with the walls of the container
berlanggar antara satu sama lain secara perlanggaran kenyal dan dengan
dinding bekas
18 Diagram 13 shows a cylinder contains air.Rajah 13 menunjukkan satu silinder mengandungi udara
When the piston is pulled upwards, which of the following is true?Apabila piston itu ditarik ke atas, manakah antara berikut adalah benar?
A The density of the gas molecules increasesKetumpatan molekul-molekul gas bertambah
B The distance between molecules of gas increasesJarak antara molekul-molekul gas bertambah
C The number of the gas molecules per unit volume increasesBilangan molekul gas per unit isipadu bertambah
D The frequency of collisions between the gas molecules with the walls of thecontainer increase
Frekuensi perlanggaran antara molekul-molekul gas dengan dinding
bekas bertambah.
air tight piston
omboh kedap udara
Cylinder
silinder Diagram 13
Rajah 13
air
udara
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19 Which of the following shows the height h, of simple mercury barometer that
measures the atmospheric pressure?Manakah antara berikut menunjukkan ketinggian h pada barometer merkuri yang
mengukur tekanan atmosfera?
20 Diagram 14 shows an air balloon of mass 250 kg is floating stationary in the air.Rajah 14 menunjukkan belon udara berjisim 250 kg terapung pegun di udara.
What is the upthrust of the balloon?
Berapakah daya angkat pada belon?
A 25 N
B 100 NC 250 N
D 2 500 N
Diagram 14
Rajah 14
Ground
Bumi
Air balloon
Belon udara
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21 Diagram 15 shows a card and a glass of water. Rajah 15 menunjukkan kad dan segelas air.
When the hand is released, water does not flow out from the glass.What physics concept involved in the above situation?
Apabila tangan dialihkan, air tidak mengalir keluar daripada gelas.Apakah konsep fizik yang terlibat dalam situasi di atas?
A Liquid pressure
Tekanan cecair
B Atmospheric pressure
Tekanan atmosfera
C Gas pressure
Tekanan gas
22 Heat energy is supplied at the same rate to 100 g of paraffin and 100 g of water in
similar containers. The temperature of the paraffin rises faster. This is because
the paraffinTenaga haba dibekalkan dengan kadar yang sama terhadap 100g paraffin dan
100 g air di dalam bekas yang sama. Suhu paraffin meningkat dengan lebih
cepat kerana paraffin
A is denser than water
lebih tumpat daripada air
B is less dense than water.kurang tumpat daripada air
C has a smaller specific heat capacity than water
mempunyai muatan haba tentu yang rendah daripada air
D has a larger specific heat capacity than watermempunyai muatan haba tentu yang tinggi daripada air
Diagram 15
Rajah 15
Glass of watergelas berisi air
cardboard
kadbod
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23 Hot water at 1000C is added to 5 g of ice at 0
0C. What is the minimum mass of
hot water needed to melt the ice?[Specific latent heat of fusion of ice is 336 J g-1, Specific heat capacity of water is
4.2 J g-1 0
C-1
]
Air panas pada suhu 100
0
C dicampurkan kepada 5 g ais pada suhu 0
0
C.Berapakan jisim minimum air panas yang diperlukan untuk mencairkan ais?
[Haba pendam tentu pelakuran ais 336 J g-1
, muatan haba tentu air 4.2 J g-1 0
C-1
]
A 0.8 g
B 4.0 gC 16.8 g
D 70.6 g
24 In very cold weather, water pipes sometimes burst becausePada musim sejuk, paip air kadangkala pecah kerana
A the pipes contract on cooling so that the water pressure inside risespaip mengecut pada musim sejuk maka tekanan air di dalam paip
meningkat
B the ice which formed inside the pipes expands when it melts
ais yang terbentuk di dalam paip mengembang apabila mencair
C water expands when cooled from 40C to 0
0C or below.
air mengembang apabila menyejuk dari 40C ke 0
0C atau ke bawah
D the formation of ice from water produces an increase in volume.pembentukkan ais daripada air meningkatkan isipadu
25 When an ice cube, initially at 0 0C, is left in an area at room temperature, the ice
cube will melt because
Seketul ais pada suhu 00C, akan bertukar menjadi cecair apabila diletakkan di
tempat yang mempunyai suhu bilik kerana
A no energy is required for this process to occurtiada tenaga diperlukan untuk prosess ini berlaku
B the molecules within the ice lose kinetic energy
molekul di dalam ais kehilangan tenaga kinetik
C the molecules within the ice gain potential energy
molekul di dalam ais memperolehi tenaga keupayaan
D the molecules within the ice lose potential energy
molekul di dalam ais kehilangan tenaga keupayaan
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26 The focal length of a converging lens is 10 cm. What is the maximum distance
from the lens to the object so that the lens can acts as a magnifying lens?
Panjang fokus sebuah kanta cembung ialah 10 cm. Berapakah jarak maksimumantara suatu objek dengan kanta cembung tersebut supaya kanta itu boleh
berfungsi sebagai sebuah kanta pembesar ?
A 5 cmB 10 cm
C 15 cm
D 20 cm
27 Which of the optical instruments uses total internal reflection principle?Manakah peralatan optik yang menggunakan prinsip pantulan dalam penuh?
A Simple microscopeMikroskop ringkas
B Magnifying glassKanta pembesar
C Astronomical telescopeTeleskop astronomi
D Prism periscope
Periskop prisma
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28 Diagram 16 shows two cars, X and Y, travelling in the different directions and
passing through a sharp bend.Rajah 16 menunjukkan dua buah kereta, X dan Y, sedang bergerak pada arah
yang berlainan dan melalui selekoh tajam.
Which of the following mirrors is the most suitable to be placed at point P so thatthe driver of car X can see car Y?Antara yang berikut, jenis cermin yang manakah paling sesuai untuk diletakkan
pada kedudukan P supaya pemandu kereta X boleh melihat kereta Y?
A Plane mirror
Cermin satah
B Concave mirror
Cermin cekung
C Convex mirrorCermin cembung
D L- shape plane mirrorCermin satah bentuk L
Diagram 16
Rajah 16
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29 Diagram 17.1 shows that Ahmad throws a stone into a lake with the depth of
water increasing towards the centre of the lake. The wave pattern formed is asshown in figure 17.2.
Rajah 17.1 menunjukkan Ahmad membaling batu ke dalam tasik yang
kedalamannya semakin bertambah ke arah tengah tasik. Corak gelombang yang
dihasilkan adalah seperti rajah 17.2
Diagram 17.1
Rajah 17.1
Diagram 17.2
Rajah 17.2
What is the wave phenomena involved in this situation?
Apakah fenomena gelombang yang berlaku dalam situasi ini?
A Refraction
Pembiasan
B Diffraction
Pembelauan
C Interference
Interferen
D ReflectionPantulan
batu
pantaidasar tasik
muka elomban
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30
Diagram 18Rajah 18
Which of the following statements is true about the sound waves?Manakah antara kenyataan berikut benar untuk gelombang bunyi
A Sound waves is a transverse wavesGelombang bunyi adalah gelombang melintang
B Sound waves is an electromagnetic waves
Gelombang bunyi adalah gelombang elektromagnet
C Air particles at the speaker vibrates perpendicular to the direction of the
wave propagation.Molekul udara di hadapan pembesar suara bergetar berserenjang
dengan arah perambatan gelombang
D Reflection helps us to hear the soundPantulan membantu kita mendengar bunyi
amplifierdiafragma
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31
Diagram 19
Rajah 19
Diagram 19 shows an interference pattern for water waves. Calculate the
separation of two consecutive nodal lines, x if D and a are given as 0.2 m and
5 cm respectively.Rajah 19 menunjukkan corak interferen bagi gelombang air. Hitung jarak
pemisah antara dua garis nod, x jika diberi jarak satah, D dan jarak antara
sumber, a adalah 0.2 m dan 5 cm masing-masing
A 0.033 B 4
C 20 D 40
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32 Diagram 20 shows a graph of an oscillation system experiences damping.Rajah 20 menunjukkan graf pelembapan bagi satu sistem ayunan.
Diagram 20
Rajah 20
Which of the following quantities does not change?
Manakah antara kuantiti fizik berikut yang tidak berubah ?
A Period, T
Tempoh T
B Wavelength, Jarak gelombang,
C Amplitude ,aAmplitud,a
D Energy, ETenaga, E
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33 Diagram 21 shows a radar transmits signal to aeroplane PRajah 21 menunjukkan sebuah radar menghantar isyarat kepada kapalterbang P
Diagram 21
Rajah 21
The radar transmits a signal at a velocity of 3.0 x 108 ms-1 towards the aeroplane P
and detects the reflected signal 4 x 10-4 s later. Calculate the distance of P from
the transmitter radar at that time?
Sebuah radar menghantar isyarat kepada kapalterbang P pada kelajuan
3.0 x 108
ms-1
dan kemudiannya menerima semula isyarat pantulan pada
4 x 10-4
s kemudian. Kirakan sesaran P dari radar pemancar pada masa tersebut.
A 6 x 104 m
B 6 x 105
m
C 1.2 x 105
mD 1.2 x 1012 m
Aeroplane P
Kapalterbang P
Radar transmitter
Radar pemancar
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34. Diagram 22 shows a circuit.Rajah 22 menunjukkan satu litar.
6 V V1 R =12
V3 9V
V2 R= 6
What is the reading on the voltmeter V2 ?Apakah bacaan voltmeter V2 ?
A 3 VB 6V
C 9V
D 15 V
35 A cars 12 V accumulator cannot be replace by a large 12 V dry cells because
the dry cells would
Akumulator kereta (sel basah),12V tidak boleh diganti dengan 12 V bateri sel
kering kerana ini akan menyebabkan
A be too heavy and too many dry cells
berat dan terlalu banyak bateri
B have too large internal resistance
rintangan dalam terlalu besarC have the wrong polarity
mempunyai kutub yang salah
D not provide a.ctidak membekalkan arus ulangalik
Diagram 22
Rajah 22
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36 Diagram 23 below shows a cell of negligible internal resistance connected to
two resistors. Rajah 23 menunjukkan bateri (abaikan rintangan dalam) yang disambungkan
kepada dua perintang.
6V
I
20
40
Diagram 23Rajah 23
What is the value of current, I?Apakah nilai arus ,I ?
A 0.45 AB 0.40 A
C 0.25 A
D 0.20 A
37 Why is the filament made in the shape of a coil?Mengapakah bentuk filamen bergelung?
A To increase the length and produce a higher resistanceUntuk menambahkan panjang dan menghasilkan rintangan yang tinggi
B To increase the current and produce more energy
Untuk menambahkan arus dan menghasilkan lebih tenaga
C To decrease the resistance and produce a higher current
Untuk mengurangkan rintangan dan menghasikan arus yang tinggi
D To decrease the current and produce a higher potential difference
Untuk mengurangan arus dan menambahkan beza keupayaan
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38 A current flow in two resistors connected in series as shown in Diagram 24.
A1 and A2 are the reading on the ammeter, V1 and V2 are the reading on thevoltmeters.
Arus melalui dua perintang yang disambung bersiri seperti dalam rajah 24.
A1 dan A2 adalah bacaan ammeter, V1 dan V2 adalah bacaan voltmeter.
V1 V2
Current
A1 5 10 A2
Diagram 24Rajah 24
Which of the following correctly describes the ammeter and voltmeter reading?
Manakah antara pernyataan berikut betul tentang bacaan ammeter dan bacaan
voltmeter?
Ammeter reading Voltmeter reading Bacaan ammeter Bacaan voltmeter
A A1 < A2 V1 < V2B A1 = A2 V1 = V2C A1 = A2 V1 < V2D A1 > A2 V1 = V2
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39 Which of the following shows the correct pattern of the magnetic field produced
by current flows into the page?Manakah antara rajah berikut menunjukkan medan magnet yang terhasil apabila
arus masuk ke arah dalam kertas
40 Diagram 25 shows a pendulum bob attached to the end of copper wire. The
pendulum bob is allowed to swing between North and South Pole of two magnets.
Rajah 25 menunjukkan sebuah bandul digantung pada hujung seutas dawai kuprum
Bandul itu berayun antara kutub utara dan kutub selatan dua magnet.
Diagram 25Rajah 25
What is the correct position of the pendulum bob to get the maximum deflection
of the galvanometer pointer?Apakah kedudukan yang betul bandul itu untuk menghasilkan pesongan penuh
galvanometer?
Dawai kuprum
bandul
Pendulum
bob
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43 Diagram 27 shows a circuit containing a step down transformerRajah 27 menunjukkan litar bagi transformer injak turun.
Diagram 27
Rajah 27
Which statement is correct about the brightness of bulb P and bulb Q?
Manakah antara pernyataan berikut benar tentang kecerahan mentol P dan mentol Q
A Bulb P is brighter than bulb Q
Mentol P lebih cerah daripada mentol Q
B Bulb Q is brighter than bulb P
Mentol Q lebih cerah daripada mentol P
C Bulb P and bulb Q have the same brightness
Mentol P dan mentol Q mempunyai kecerahan yang sama
44 A cathode ray oscilloscope can be used as follows exceptOsiloskop Sinar Katod boleh digunakan seperti berikut kecuali
A measure current
mengukur arus
B show the wave of alternating current
menunjukkan gelombang arus ulang alik
C measure time intervalmengukur sela masa
D measure the frequency of alternating currentmengukur frekuensi arus ulang alik
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45 Diagram 28 shows a circuit containing three logic gates.Rajah 28 menunjukkan litar yang mengandungi tiga get logik.
Diagram 28
Rajah 28
Which of the following logic gate is equivalent to the circuit above?Manakah di antara get logic berikut adalah setara dengan litar di atas?
A OR gateGet ATAU
B AND gateGet DAN
C NOT gateGet TAK
D NAND gateGet TAKDAN
46. Which of the following diagrams is an n-type semiconductor?
Manakah di antara rajah berikut adalah semikonduktor jenis n?
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47 Diagram 29 shows the symbol of an npn transistor.Rajah 29 menunjukkan simbol transistor npn
Diagram 29Rajah 29
What is the value of Ie?Berapakah nilai Ie?
A 24 mA
B 115 mA
C 125 mA
D 600 mA
48. Which of the following is NOT the direction of-particles approach very close to
the nucleus of an atom?
Yang manakah di antara berikut TIDAK menunjukkan arah zarah apabila
mendekati nukleus suatu atom?
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49 Three nuclei X, Y and Z have proton numbers and nucleon numbers as shown in the
table below.Tiga nukleus X, Y dan Z mempunyai nombor proton and nukleon seperti jadual di
bawah.
Proton numberNombor Proton Nucleon numberNombor nukleon
X 43 93
Y 43 94
Z 44 94
Which nuclei are isotopes of the same element?
Manakah nuklei adalah isoptop dari unsur yang sama?
A X and Y only
X dan Y sahaja
B X and Z onlyX dan Z sahaja
C Y and Z onlyY dan Z sahaja
D X, Y and Z
X, Y dan Z
50 A nuclide 232 V decays to nuclide220
W and emits alpha-particles and92 90
beta-particles. How many alpha and beta particles are produced?
Satu nukleus232
V mereput kepada nukleus220
W dan mengeluarkan92 90
zarah alfa dan beta. Berapakah bilangan zarah alfa dan beta dihasilkan?
A 4 and 3
4 dan 3
B 3 and 4
3 dan 4
C 4 and 44 dan 4
D 3 and 3
3 dan 3
END OF QUESTION PAPER
KERTAS SOLAN TAMAT
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PERSIDANGAN KEBANGSAAN PENGETUA-PENGETUA
SEKOLAH MENENGAH MALAYSIA
CAWANGAN NEGERI SEMBILAN DARUL KHUSUS
PEPERIKSAAN PERCUBAAN BERSAMA
SIJIL PELAJARAN MALAYSIA 2008
PHYSICS (FIZIK)Paper 2 (Kertas 2)
Two hours and thirty minutes ( Dua jam tiga puluh minit)
JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU
Kertas soalan ini mengandungi 31 halaman bercetak
Name :
Form :
4531 / 2
Physics
Paper 2
September
2008
2 hours
Kod Pemeriksa
Bahagian SoalanMarkah
Penuh
Markah
Diperoleh
1 4
2 5
3 6
4 7
5 8
6 8
7 10
A
8 12
1 20
B 2 20
3 20C
4 20
Jumlah
1. Tuliskan nama dan kelas
anda pada ruang yang
disediakan.
2. Kertas soalan ini adalah dalam
dwibahasa.
3. Soalan dalam Bahasa Inggeris
mendahului soalan yang sepadan
dalam dalam Bahasa Melayu.
4. Calon dibenarkan menjawab
keseluruhan atau sebahagian soalan
sama ada dalam Bahasa Inggeris
atau Bahasa Melayu.
5. Calon dikehendaki membacamaklumat di halaman 2 atau
halaman 3.
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INFORMATION FOR CANDIDATES
1. This question paper consists ofthree sections:
Section A, Section B and Section C.
2. Answerallquestions in Section A. Write your answers for Section A in the spacesprovided in the question paper.
3. Answerone question in Section B andone question from Section C. Write your
answers for Section B andSection C on a separate answer sheet.
Answer questions in Section B andSection C in detail.
Answers should be clear and logical. Equations, diagrams, tables, graphs and
other suitable methods can be used to explain your answer.
4. If you wish to cancel any answer, neatly cross out the answer.
5. The diagrams in the questions provided are not drawn to scale unless stated.
6. The marks allocated for each question and sub-section of a question are shown in
brackets.
7. A list of formulae is provided on page 5.
8. You may use a non-programmable scientific calculator. However, steps in
calculation must be shown.
9. The time suggested to complete Section A is 90 minutes, Section B is 30
minutes andSection Cis 30 minutes.
10. Hand in all your answer sheets at the end of the examination.
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MAKLUMAT UNTUK CALON
1. Kertas soalan ini mengandungi tiga bahagian:
Bahagian A, Bahagian B dan Bahagaian C.
2. Jawab semua soalan dalam Bahagian A. Jawapan kepada Bahagian Ahendaklah ditulis dalam ruang yang disediakan dalam kertas soalan
3. Jawab satu soalan daripada Bahagian B dan satu soalan daripadaBahagian C. Jawapan kepada Bahagian B dan Bahagian C hendaklah ditulis
dalam kertas jawapan berasingan.
Anda diminta menjawab dengan lebih terperinci untukBahagian B dan
Bahagian C.
Jawapan mestilah jelas dan logik. Persamaan, gambar rajah, jadual, graf
dan cara lain yang sesuai untuk menjelaskan jawapan anda boleh digunakan.
4. Sekiranya anda hendak membatalkan sesuatu jawapan, buat garisan di atasjawapan itu.
5. Rajah yang mengiringi soalan tidak dilukis mengikut skala kecuali dinyatakan.
6. Markah yang diperuntukkan bagi setiap soalan atau ceraian soalan ditunjukkan
dalam kurungan di hujung setiap soalan atau ceraian soalan.
7. Satu senarai rumus disediakan di halaman 5.
8. Anda dibenarkan menggunakan kalkulator saintifik yang tidak boleh diprogram.
Walau bagaimanapun, langkah mengira perlu ditunjukkan.
9. Masa yang dicadangkan untuk menjawab Bahagian A ialah 90 minit.
Bahagian B ialah 30 minit dan Bahagaian C aialah 30 minit.
10. Ikatkan semua kertas jawapan dan serahkan di akhir peperiksaan.
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The following information may be useful.The symbols have their usual meaning.
1. a =t
uv 15.
Power, P = energy
time
2. v2 = u2 + 2as 16. f
1
u
1+
v
1
3. s = ut +2
1at
217. =
D
ax
4. Momentum = mv 18.n = sin i
sin r
5. F = ma 19. n = real depthapparent depth
6. Kinetic energy = mv2 20. Q = I t
7. Gravitational potential energy = mgh 21. V = IR
8. Elastic potential energy = Fx 22. Power, P = IV
9. =V
m23.
s
p
s
p
V
V
N
N
10. Pressure, P = hg 24. Efficiency =p
s
p
s
V
V
I
Ix 100%
11.Pressure , P =
A
F
25. g = 10 ms-2
12. Heat, Q = mc 26. E = mc2
13.T
pV= constant 27.
Linear magnification, m = v
u
14. v = f 28.Power of lens P = 1
f
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BLANK PAGE
(HALAMAN KOSONG)
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SECTION A
Bahagian A
[60 marks]
[60 markah]
Answer all questions from this section.
Jawab semua soalan daripada bahagian ini.
1 The equations of motion provides a useful means of predicting information about
an objects motion in a straight line.
Persamaan gerakan dapat memberikan maklumat berkenaan pergerakan objek
yang bergerak dalam garis lurus.
The equation which describe an objects motion is given by the equation below
Persamaan yang menerangkan pergerakan objek terdapat dalam persamaan
di bawah
s = ut + at2
where s is displacement, u is initial velocity, a is acceleration and t is time.
di mana s ialah sesaran, u ialah halaju awal, a ialah pecutan dan t ialah masa.
(a) (i) What is meant by base quantity ?
Apakah yang dimaksudkan dengan kuantiti asas?
..
(ii) What is the base unit for acceleration?
Apakah unit asas bagi pecutan?
(b) Based on the equation, give one example of
Berdasarkan persamaan tersebut, nyatakan satu contoh
Base quantity
Kuantiti asas
Derived quantity.
Kuantiti terbitan
Scalar quantity
Kuantiti skalar
Vector quantity
Kuantiti vektor
[1 mark]
[1 markah]
1
1
1
1[1 mark]
[1 markah]
[1 mark]
[1 markah]
[1 mark]
[1 markah]
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2. Diagram 1 shows the side mirrors of a car which helps the driver to see objects
behind the car more effectively.
Rajah 1 menunjukkan sebuah kereta yang mempunyai cermin sisi yang
berfungsi untuk membantu pemandu melihat objek di belakang kereta dengan
lebih berkesan.
(a) State the type of mirror used.
Nyatakan jenis cermin yang digunakan bagi cermin sisi tersebut.
.....................................................................................................................
.....................................................................................................................
[ 1 mark ]
[1 markah ]
(b) Give one reason why this type of mirror is used instead of a plane mirror.
Berikan satu sebab jenis cermin tersebut digunakan dan bukannya cermin
satah.
........................................................................................................................
........................................................................................................................
[ 1 mark ]
[1 markah ]
Diagram 1Rajah 1
Side mirror
Cermin sisi
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(c) In Diagram 2, F is the focal point and C is the centre of curvature of a
convex mirror.
Dalam Gambarajah 2, F dan C masing-masing ialah titik fokus dan
pusat kelengkungan bagi suatu cermin cembung.
(i) Complete the ray diagram in Diagram 2 to show the position of the
image formed.
Lengkapkan gambarajah sinar pada Rajah 2 dan tunjukkan posisi
bagi imej yang terbentuk.
[ 2 marks]
[ 2 markah ]
(ii) State two characteristics of the image formed.
Nyatakan dua ciri-ciri imej yang terbentuk.
1. ..
2. ..
[ 1 mark ]
[ 1 markah ]
Diagram 2
Rajah 2
2
1
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3 The diagram 3 shows a U-shaped laminated soft iron core is wound with
insulated copper wire AB and CD. An a.c. voltage of 240 V is connected at
the end of AB and a bulb 12V 60W is connected at the end CD.
Rajah 3 menunjukkan satu teras besi lembut berlapis berbentuk-U dililitkan
dengan dawai kuprum bertebat AB dan CD. Voltan a.u 240 Vdisambungkan kepada hujung AB dan mentol 12V 60W disambungkan
kepada hujung CD.
Diagram 3
Rajah 3
(a) What type of transformer is shown in Diagram 3.
Apakah jenis transformer yang ditunjukkan dalam Rajah 3
[ 1 mark ]
[1 markah]
(b) State one reason why the a.c. voltage is supplied.
Nyatakan satu sebab mengapa voltan a.u dibekalkan.
.
[ 1 mark ]
[1 markah]
(c) The bulb lights up with normal brightness. Determine the ratio of the
number of turns in the coil AB to the number of turns in the coil CD.Mentol menyala dengan kecerahan normal. Tentukan nisbah bilangan
lilitan gegelung AB kepada bilangan lilitan gegelung CD
[ 2 marks ]
[2 markah]
12V 60W
Soft iron core
Input
Voltage
240V a.c
Primary coil
Secondary coil
P Q
A
B
C
D
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(d) The voltage supply 240 V. alternating current. is replaced by a voltage
supply 240 V direct current.
Bekalan kuasa yang dibekalkan 240 V arus ulangalik itu di gantikan
dengan bekalan kuasa 240V arus terus.
(i) What happens to brightness of the bulb.
Apakah yang berlaku kepada kecerahan mentol?
.................................
[ 1 mark ]
[1 markah]
(ii) Give the reason for your answer.
Nyatakan sebab jawapan anda.
.
[ 1 mark ]
[1 markah]
1
1
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4. Diagram 4 shows Nadia standing on a weighing scale in a lift with Farah
standing beside her.
Rajah 4 menunjukkan Nadia sedang berdiri di atas penimbang berat di dalam
lif bersebelahan Farah.
The reading of the weighing scale observed by Farah is 50 kg when the lift is
stationary.
Bacaan penimbang diperhatikan Farah ialah 50 kg apabila lif itu
sedang berhenti
(a) What is Nadias weight? [1mark]
Berapakah berat Nadia? [1markah]
.
(b) How is the reading of the weighing scale when the lift
Berapakah bacaan penimbang apabila lif itu
(i) accelerates upward [1mark]
memecut ke atas [1markah]
.
(ii) accelerates downward [1mark]
memecut ke bawah [1markah]
(iii) moves downward with constant velocity [1mark]
bergerak ke bawah dengan halaju seragam [1markah]
Diagram 4
Rajah 4
Nadia
Farah
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(c) Give reasons for your answer in (b)(iii)
[1 mark]
[1 markah]
(d) If the reading of the weighing scale in Diagram 4 is 46 kg, find the value
of the acceleration of the lift.
Jika bacaan penimbang pada Rajah 4 ialah 46 kg, tentukan nilai pecutan lift itu.
[2 marks]
[2 markah]
2
1
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5. The label on electric kettle is marked 240 V , 3 kW. The kettle
contains 1.7 kg of water at 200
C. It takes 3.5 minutes to raise the
temperature of the water to 1000
C.
[ Specific heat capacity of water is 4.2 X103
J kg-1 0
C-1
,
specific latent heat of vaporization of water 2.3 X106
J kg-1
]
Sebuah cerek dilabelkan sebagai 240 V , 3 kW. Cerek mengandungi 1.7 kg air
pada suhu 200
C. Selama 3.5 minit masa diperlukan untuk meningkatkan
suhu air sehingga 1000C.
[Muatan haba tentunya ialah 4.2 X 103J kg
-1 0C
-1, haba pendam tentu
pengewapan air 2.3 X106
J kg-1
]
(a) What is meant by specific heat capacity?
Apakah yang dimaksudkan dengan muatan haba tentu?
...
..
[ 2 marks ]
[2 markah]
(b) Calculate
Kira
(i) the energy output of the electric kettle in 3.5 minutes,
tenaga yang dikeluarkan dari cerek dalam masa 3.5 minit
[ 2 marks ]
[2 markah]
Diagram 5
Rajah 5
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(ii) the energy required to raise the temperature of 1.7 kg of water from 200
C to 1000
C.
tenaga yang diperlukan untuk meningkatkan suhu bagi 1.7 kg air dari 200
C ke 1000
C.
[ 2 marks ]
[2 markah]
(iii) the energy required to boil away 0.23 kg of water at 100 0 C.tenaga yang diperlukan untuk mendidihkan 0.23 kg air pada 100
0C
[ 2 marks ]
[2 markah]
2
2
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6. Diagram 6 shows an electromagnetic spectrum
Rajah 6 menunjukkan spektrum elektromagnet
Diagram 6
Rajah 6
(a) (i) What is meant by electromagnetic waves?
Apakah yang dimaksudkan dengan gelombang elektromagnet?
....
[1 mark ]
[1markah]
(ii) Give one common characteristic of the components of the
electromagnetic spectrum.
Berikan satu ciri sepunya komponen spektrum elektromagnet.
[ 1 mark ]
[ 1 markah]
PS
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(b) Based on the Diagram 6, give the name and the usage of components
P and S .
Berdasarkan Rajah 6, berikan nama dan kegunaan komponen P dan S
[
[4 marks ]
[4 markah]
(c) Given that the speed of electromagnetic wave is 3 x 108
m s-1
.
Find the wavelength of the radio wave which has a frequency
of 3.2 kHz.
Diberi halaju gelombang elektromagnet ialah is 3 x 108
m s-1
.
Cari panjang gelombang bagi gelombang radio yang mempunyai
frekuensi 3.2 kHz.
[ 2 marks ]
[2 markah]
Component of the
electromagnetic wavesKomponen gelombang
elektromagnet
Applications of the waves
Kegunaan gelombang
P : .
S: .
2
2
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7 (a) Diagram 7.1 show a boat made from steel floating at the sea. The mass of
the boat is 7500 kg.
Rajah 7.1 menunjukkan bot yang diperbuat daripada keluli di air laut.
Jisim bot itu adalah 7500 kg.
.
Diagram 7.1
Rajah 7.1
(i) State one function of plimsoll line?
Nyatakan satu kegunaan garis plimsol?
.
[ 1 mark]
[1 markah]
(ii) What is the buoyant force acts on the boat.
Berapakah daya julangan yang bertindak ke atas bot itu.
[2 marks]
[2 markah]
Plimsoll line
Garis plimsoll
Sea water
Air laut
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(iii) In the Diagram 7.2, mark the level of water when the boat enter the river
Mouth.
Dalam Rajah 7.2, tandakan paras air bila bot itu memasuki muara
sungai.
[1 mark]
[1 markah]
(iv) Explain your answer in (a)(iii).
Terangkan jawapan anda di (a)(iii).
..
.
[ 2 marks]
[2 markah]
(b) Diagram 7.3 shows a hot air balloon floating stationary in the air.
Rajah 7.3 menunjukkan belon udara panas terapung pegun di udara.
Upthrust
Weight
Berat
Diagram 7.2
Rajah 7.2
Diagram 7.3
1
2
Hot air balloon
Belon udara panas
Load
Beban
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(i) State the relationship between the weight of air balloon and the upthrust.
Nyatakan hubungan antara berat belon udara dan daya julangan.
..[ 1 mark]
[1 markah]
(ii) What will happen to the air balloon if the load is dropped?
Apakah yang akan berlaku kepada belon udara panas jika beban dijatuhkan.
[ 1 mark][1 markah]
(iii) Explain your answer in (b) (ii).
Terangkan jawapan anda di (b)(ii)
...
..
.
[ 2 marks]
[2 markah]
1
1
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8 Diagram 8 shows a transistor circuit. The circuit is used to automatically switch
on the bulb at night.
Rajah 8 itu menunjukkan satu transistor di dalam satu litar. Litar itu digunakan
untuk menghidupkan mentol secara automatic pada waktu malam.
(a) (i) Name component Q
Namakan komponen Q
..
[1 mark]
[1 markah]
(ii) State two functions of component Q?
Apakah dua fungsi komponen Q?
...
[2marks]
[2 markah]
(b) What is the function of resistor R?
Apakah fungsi perintang R?
...
[1 mark]
[1 markah]
2
1
1
Diagram 8
Rajah 8
M
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SECTION B
Bahagian B
[20 marks]
[20 markah]
Answer any one question from this section.
Jawab mana-mana satu soalan daripada bahagian ini.
9. (a) Diagram 9.1 and 9.2 shows two different situations that happen in our daily
life. Diagram 9.1 shows a hand touching a hot kettle and Diagram 9.2 shows
a hand holding an ice. Both are having different temperatures. The arrow
in both diagrams indicates the direction of heat flow.
Rajah 9.1 dan 9.2 menunjukkan dua situasi yang berlaku didalam
kehidupan seharian. Rajah 9.1 menunjukkan tangan tersentuh cerek
yang panas dan Rajah 9.2 menunjukkan tangan memegang seketul ais.
Kedua-duanya mempunyai suhu yang berbeza.
(i) What is meant by temperature?
Apakah yang dimaksudkan dengan suhu?
[ 1 mark ]
[1 markah]
(ii) Using Diagram 9.1 and 9,2, compare the temperature of the objects, the effect
of heat experienced by the hands and the direction of heat flow.
Menggunakan Rajah 9.1 dan 9.2 bandingkan suhu kedua-dua objek dan kesanhaba yang dirasai oleh kedua-dua tangan dan arah pengaliran haba.
Relate the direction of the heat flow to the difference in temperature between
objects which are in thermal contact.
Hubungkaitkan arah pengaliran haba dengan perbezaan suhu antara objek
yang bersentuhan secara terma
[ 4 marks ]
[4 markah]
Diagram 9.1
Rajah 9.1
Diagram 9.2
Rajah 9.2
hand hand
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(b) Diagram 9.3 shows the phenomenon of sea breeze which occur during the day.
Explain this phenomenon.
Rajah 9.3 menunjukkan fenomena bayu laut yang berlaku pada waktu siang.
Terangkan bagaimana ia berlaku.
[ 5 marks ]
[5 markah]
(c) Diagram 9.4 shows a desk lamp placed on a desk used by a student.
This type of lamp is not suitable to be used as a study lamp.Rajah 9.4 menunjukkan sebuah lampu meja yang digunakan oleh seorang
Pelajar. Lampu ini tidak sesuai digunakan sebagai lampu untuk belajar
Diagram 9.4
Rajah 9.4
Explain the modifications that can be made to improvise the desk lamp used
by the student.
Terangkan pengubahsuaian pada lampu meja yang dapat digunakan oleh
pelajar tersebut.
Emphasize your explanation in the following aspects:
Dalam penerangan anda berikan penekanan bagi aspek-aspek berikut:
(i) comfort the person who will use the lamp.
memberi keselesaan kepada pengguna
(ii) to reduce the heat transfer for the desk lamp
mengurangkan pemindahan tenaga haba
(iii) the design of the lamp desk
reka bentuk lampu meja tersebut
(iv) safety features of the lamp
ciri-ciri keselamatan untuk penggunaan lampu
(v) the energy efficiency of the lamp
kecekapan tenaga lampu itu. [ 10 marks ]. [10 markah]
Diagram 9.3
Rajah 9.3
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10. (a) The lamps in a house are connected in parallel to the main supply.
Diagram 10 shows two bulbs are connected to a switch and a dry cell.
Lampu yang dipasang di rumah disambung selari kepada bekalan kuasa.
Rajah 10 menunjukkan dua mentol disambung ke satu suis dan satu sel
kering.
(i) Based on Diagram 10, draw the electric circuit diagram in your answer
sheet.
Berdasarkan Rajah 10, lukis rajah litar elektrik di kertas jawapan anda.
[3marks]
[3 markah]
Diagram 10
Rajah 10
(ii) Each bulb is labelled 1.5V, 3W. What is meant by 1.5V , 3W ?
Setiap mentol itu berlabel 1.5V, 3W. Apakah yang dimaksudkan.
dengan 1.5V, 3W
[2marks]
[2 markah]
(iii) Compare the brightness of bulb A and bulb B, when the switch is on.
Bandingkan kecerahan mentol A dan mentol B apabila suis
dihidupkan?
[1mark]
[1 markah]
(iv) Determine the current in the circuit when the switch is on?
Hitungkan arus dalam litar apabila suis dihidupkan?
[2marks]
[2 markah]
(v) Calculate the energy consumed by the two bulbs if they are switched on
for 1 hour.
Kirakan tenaga yang digunakan oleh kedua-dua mentol itu jika
dihidupkan selama 1 jam
[2marks][2 markah]
A
B
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(b) As an engineer you are given the task of determine the type of
wire that is suitable to be used for connecting electric devices in a house.
Sebagai seorang jurutera anda diberikan tugas untuk menentukan jenis dawai
yang sesuai digunakan sebagai dawai penyambung di dalam sebuah rumah
Explain the suitability of the following aspect of the wire.Terangkan kesesuaian dawai itu dalam aspek berikut.
(i) resistance of wire
rintangan dawai
(ii) melting point of wire
takat lebur dawai
(iii) density of wire
ketumpatan dawai
(iv) rate of rusting of wire
kadar pengaratan dawai
(v) rate of expansion of wire
kadar pengembangan dawai
[10marks]
[10 markah]
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SECTION C
Bahagian C
[20 marks]
[20 markah]
Answer any one question from this section.
Jawab mana-mana satu soalan daripada bahagian ini.
11. Diagram 11.1 shows a machine controlled by a worker to dump soil.
A hydraulic system helps to move the bucket containing soil.
Rajah 11.1 menunjukkan mesin dikendalikan oleh seorang pekerja untuk
membuang tanah. Sistem hidraulik digunakan untuk menggerakan bekas berisi
tanah.
Diagram 11.1
Rajah 11.1
(a) What is meant by pressure?
Apakah maksud tekanan?
[1 mark ]
[1 markah ]
(b) Using a concept of pressure in liquid, explain why the hydraulic system in
this machine is known as a force multiplier.
Menggunakan konsep tekanan di dalam cecair, terangkan mengapa sistem
hidraulik ini dikenali sebagai pengganda daya.
[4 marks]
[4 markah]
Hydraulic system
Sistem hidraulic
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(c) Diagram 11.2 shows a hydraulic jack lifting the back portion of the car.
Rajah 11.2 menunjukkan jet hidraulik digunakan untuk menaikkan bahagian
belakang kereta.
Diagram 11.2Rajah 11.2
Table 11.3
Jadual 11.3
Table 11.3 shows four type of liquid, K, L, M, and N, with different specifications.
You are required to determine the most suitable liquid that can be used as ahydraulic fluid in the hydraulic jack.
Study the specifications of all the four types of liqiud from the following aspects:
Jadual 11.3 menunjukkan empat jenis cecair, K,L,M, dan N, dengan spesifikasi
yang berbeza. Anda dikehendaki menentukan cecair yang paling sesuai
digunakan sebagai sebagai cecair hidraulik dalam jet hidraulik.
Kaji spesifikasi keempat-empat jenis cecair itu dari aspek berikut:
Type of
liquid
Jenis cecair
Boiling point
/ C
Takat didih/
C
Specific heat capacity/
J kg-1
C-1
Muatan Haba Tentu/
J kg-1 C-1
Density/
Ketumpatan/
/kg m-3
Rate of
vaporation
Kadar
pengewapan
K 357 140 13600Low
Rendah
L 130 2500 800 LowRendah
M 100 4200 1000Average
Sederhana
N 55 2200 790High
Tinggi
Reservoir
takunganOmboh besar
Minyak
hydraulic
Injap A Injap B
Omboh kecil
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12. An echo sounder on a ship produces a pulse of sound. A fishing boat uses
the sound echo to determine the depth of seabed. You are assigned to
investigate the suitable characteristics of the waves that could be used to
determine the depth the seabed.
Pemantul gema di atas kapal menghasilkan gelombang bunyi. Bot nelayanmenggunakan pemantul gema untuk menentukan kedudukan kedalaman laut
Anda ditugaskan untuk menyelidik ciri-ciri gelombang yang sesuai
digunakan untuk menentukan kedalaman dasar laut.
Diagram 12.1
Rajah 12.1
a) . State one phenomenon of waves that produces echo
Nyatakan satu fenomena gelombang yang menghasilkan gema
[ 1 mark ]
[1markah]
b. Radio waves is used to detect the position of an aeroplane and sonar
technique is used to detect the shoal of fish below the boat.
(i) State the difference between radio waves and sound waves.
(ii) Explain why the speed of sound is greater in water than that in air?
Gelombang radio digunakan untuk mengesan keddukan kapal terbang danteknik sonar digunakan untuk mengesan kedudukan ikan dibawah kapal.
(i) Nyatakan perbezaan antara gelombang radio dan gelombang bunyi.
(ii) Terangkan kenapa halaju bunyi lebih tinggi dalam air berbanding dalam
udara?
. [ 4 marks]
[ 4markah]
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c) Table 12.2 shows the specification of five waves P,Q,R,S and T that can be used
to determine the position of a shoal of fish.
Jadual 12.2 menunjukkan spesifikasi lima gelombang P,Q,R,S dan T boleh
Digunakan untuk menentukan kedudukan sekumpulan ikan.
Name ofwaves
Nama
Gelombang
Type ofwaves
Jenis
Gelombang
Frequency/HzFrekuensi/Hz Speeds/ ms
-1
Kelajuan/ms-1 Penetrating PowerKuasa Penembusan
P Transverse
Melintang
High
tinggi
3x108
Low
Rendah
Q Longitudinal
Membujur
Low
Rendah
330 Moderate
Sederhana
R Transverse
Melintang
High
Tinggi
330 Low
Rendah
S Longitudinal
Membujur
High
Tinggi
1500 High
TinggiT Transverse
Melintang
Low
Rendah
3x108
High
Tinggi
Table 12.2
Jadual 12,2
You are required to determine the most suitable waves. Study the waves based
on the following aspects:
Kamu dikehendaki menentukan gelombang yang paling sesuai digunakan
Berdasarkan sifat berikut.
i) The type of the waves transmittedJenis gelombang yang di pancarkan
ii) The frequency of the waves
Frekuensi gelombang
iii) The speed of the waves
Kelajuan gelombang
iv) Penetrating power of waves
Kuasa penembusan gelombang
[10 marks][ 10 markah]
(d) (i) If the time taken for the return of the wave is15
1s , calculate the depth
of the shoal of fish below the boat if the speed of sound in water is
1500 ms-1
.
Jika masa yang diperlukan untuk gelombang pergi dan balik ialah15
1s ,
Hitung kedalaman kedudukan ikan jika halaju bunyi dalam air ialah1500 ms-1
.
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TRIAL JPNS PHYSICS ANSWER PAPER 2
SECTION A
Question
Number
Answer Full
Mark1.(a) (i) base quantity is a quantity that cannot be defined in any other physical
quantity
1
(ii) ms-2
1
(b) Base quantity - time / displacement
Derived quantity - velocity / accelerationScalar quantity time
Vector quantity - displacement / acceleration
1
1
Total 4
Question
Number
Answer Full
Mark
2.(a) Convex mirror 1
(b) Convex mirror has a wider view than a plane mirror. 1
(c)(i)
Note :
Draw two incident rays and each of them reflected at thecorrect path.
1 mark
Shows image formed behind the mirror and the position infront of F.
1 mark
2
(ii) Virtual ,upright and diminished. (any of two combination) 1
Total 5
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Question
Number
Answer Full
Mark
3(a) Step-down transformer 1
(b) A.u. power supply, Vp can produce a changing magnetic field thatinduces an alternating e.m.f in the secondary coil, Vs.
1
(c) Using a formula , Np = VpNs Vs
Np = 240V
Ns 12V
Np : Ns = 20 : 1
1
1
(d)(i) Bulb will not light up 1
(ii) Because transformer cannot function using direct current/cannot produce change in magnetic flux
1
Total 6
Question
Number
Answer Full
Mark
4(a) W = mg= (50)(10)
= 500 N 1
(b)(i) Increase 1
(ii) Decrease 1
(iii) Stationary / at 500N 1
(c) No resultant force/acceleration zero 1
(d) R = (46)(10)
= 460 Nmg-R = ma
500 460 = 50a
a = 0.8 ms-2
1
1
Total 7
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Question
Number
Answer Full
Mark
7(a)(i) Function for safety purpose/To ensure the maximum weight limit 1
(ii) F = mg= 7500 x 10= 7.5 x 104 N
11
(iii) The mark should be higher than the sea water level 1
(iv) 1. density of sea water is denser than the density of river water.
2. the volume of water displaced increased when density of liquid decrease
2
(b)(i) Upthrust = Weight 1
(ii) Accelerates upwards or moves upwards 1
(iii) 1. the weight of the air balloon is decreased2. buoyant force /upthrust higher than weight
3. the balloon experiences the unbalanced force.(any two answers)
2
Total 10
Question
Number
Answer Full
Mark
8(a) (i) npn transistor 1
(ii) as a switch/automatic switchamplifier
11
(b) to limit the current to the transistor 1
(c)( i) VP increaseBecause resistance at P is higher
11
(ii) the transistor will switch on the relay switch
Ib will flow through the transistor and Ic will increase
1
1
(d) 10,000 x 6 = 2
10,000+ S
Resistance, S = 20 000 OR
RS = VS1000 + RS 6
RS = 20 000
1
1
(e) The bulb will not light upbecause it needs higher voltage/current to light up.
11
Total 12
SECTION B
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Question
Number
Answer Full
Mark
9 (a) (i) Temperature is a measurement of the average kinetic energy of the atoms or
molecules in the substance.
OrTemperature is a measurement of degree of hotness of an object.
1
(ii) 1. The kettle is hotter than the ice block / The ice block is colder than the kettle.
2. The hand feels hot when it touches the hot kettle / The hand feels cold whenit touches the ice block.
3. Diagram 9.1 shows heat flows from the kettle towards the hand whileDiagram 9.2 shows the heat flows from the hand towards the ice.
4. The heat will flow from a hotter object towards a colder object.
1
1
1
1
(b) 1. Sea has higher specific heat capacity than land.
2. The temperature of the sea increases slower than of the land.
3. The air above the land is warmer than the air above the sea /Density of air above the land is lower than the density of air above the sea.
4. The warm air above the land rises up.
5. Air from the sea moves towards the land.
1
1
1
1
1
Modification Explanation
1.Use the fluorescent lamp not
a filament bulb
Fluorescent lamp use less power and
economic (consume less power) compare
to filament bulb
2. Bigger cover with white
colour
Less reflection on eyes and absorb less
heat energy and good heat reflector
3. Use the adjustable stand
Or portable
The height of the lamp can be adjusted
Can be used anywhere
4. Connect with the earth wire Avoid short circuit and damage on thebulb
5. Use an energy saver lamp Produce same brightness with less powerconsumption
2
2
2
2
2
Total 20
Question Answer Full
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Number Mark
10(a)(i)
1. Bulbs are connected in parallel 1m
2. Switch and battery are connected in series 1m
3. Correct symbols for all components 1m
3
(ii) When the bulb is connected to a power supply of 1.5V, it will produce 3J of
energy in 1 second.
1
(iii) The brightness of bulb A is the same as bulb B 1
(iv) I = P/V
= 6/1.5= 4A
11
(v) Energy = Pt= 6 x 3600
= 21 600 J
OrEnergy = VIt
= 1.5 x 4 x 3600
= 21 600 J
1
1
(b)
Modification Explanation
Resistance of wire is low to prevent power loss due to heat
Melting point is high to prevent the wire from melting
Density wire is low to reduce the mass of wire / too heavy
Rate of rusting is low to prevent it from rusting easily
Rate of expansion of wire to prevent lengthening of wire
22
2
22
Total 20
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PHYSICS : ANSWER PAPER 3
Question
Number
Answer Full
Mark
1(a) i. Real depth,H 1
ii. Apparent depth,h 1iii.Optical density of glass block
or Refractive index of glass blockor Type of medium
1
(b) Tabulate H and h and show H as the manipulated variable and h asthe responding variable.
H/cm h/cm
2.0 1.3
3.0 2.0
4.0 2.75.0 3.3
6.0 4.0
Give one (1) mark for each of the following :1. Show column for H and h respectively.
2. State the unit for H and h correctly.
3. State the value H up to 1 d.p4. Show the reading of h correctly up to 1 d.p
5. Show consistency of all data up to 1 d.p.
5
(c) Draw a graph of h against H
Give one (1) mark for each of the following :
1. Show h at y-axis and H at x-axis.
2. State the correct unit for both axis.
3. Show uniform scale for both axis.4. Show all data plotted correctly: 5 correct 2m
3-4 correct 1m
5. Draw a smooth and best fit straight line on the graph.6. The minimum size of the graph at least 5 x 4 squares (10
cm x 8 cm) starting from the first point to the last point.
7
(d) i. State the relationship between h and H correctly.(Based on the students graph) 1
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h is directly proportional to H
TOTAL 16
Question
Number
Answer Full
Mark
2 (a)(i) Show the extrapolation on the graph1
R is directly propotional toA
11
(ii) Show on the graph R = 1.6 1
When R = 1.6 ,A
1= 0.90 mm
-2 1
Hence, A = 1.1 mm2 1
(iii) Gradient of the graph
- draw triangle on graph1
= 1.8 01.02 - 0
= 1.76 mm2
1
1
(b)(i)R =
A
l
Hence, resistivity = gradient
l
= 1.76 mm2
150 mm
= 1.17 x 10-2 mm
OR = 1.17 x 10-5
m
1
1
1
(vii) -Use small value of current to avoid the wire from
getting too hot easily/-Make sure the all the connections all the tightly
connected/
-Switch off the circuit if no reading is taken to avoidwire from getting too hot
1
TOTAL 12
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Question
Number
Answer Full
Mark
3 (a) The volume of the snack pack influenced by / effected by / depends
on the atmospheric pressure of the surrounding. 1
(b) For a fixed mass and at constant temperature of a gas, its volume
will increase when the pressure decreases.
orThe volume of a gas increases when the pressure decreases.
1
(c)(i) To investigate the relationship between the volume and thepressure of a gas at fixed mass and temperature.
1
(ii) Manipulated variable :Volume of a gas, V
Responding variable :Gas pressure,P
Constant variable :Gas temperature,T / mass of a gas,m
1
1
(iii) Bourdon gauge, a syringe with volume scale and rubber tube 1
(iv)
1
(v)
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1. The piston of the syringe is pressed down slowly until the volume
of air inside is 120 cm3.
2. The pressure of the air in the syringe is read from the Bourdon
gauge.
3. The experiment is repeated with volume of air inside the syringeat 100 cm3, 80 cm3 , 60 cm3 , 40 cm3 and 20 cm3.
1
1
1
(vi) Volume , V / cm3 Pressure , P /Pa
120
100
80
60
40
20
1
(vii)1
TOTAL 12
Question
Number
Answer Full
Mark
4 (a) The strength of the magnetic field depends on the current flows in
the wire.
1
(b) The greater the magnitude of current, the stronger the magnetic
field.
1
(c) (i) To investigate the relationship between the current flows in the wire
and the strength of the magnetic field of an electromagnet.
1
Volume, V/cm3
Pressure, P/Pa
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(ii) Manipulated variable : the current in the solenoid
Responding variable : the strength of the magnetic field.
Fixed variable : number of turns of coils/the type of
core used/distance between the endof the soft iron rod and pins in
the petri dish.
.
1
1
(iii) D.C power supply, ammeter, rheostat, petri dish, retort stand with
clamp, a box of pins, soft iron rod, insulated copper wire andconnecting wires.
1
(iv) Set up the apparatus as shown in the figure.
1
(v) Start the experiment with 0.2A of current. Turn on the switch. Bringthe Petri dish of drawing pins near the lower end of the rod.
1
(vi) Count the number of pins attracted to the rod. Turn the switch offthe to allow the pins to fall back into the petri dish.
Repeat the experiment by varying the current with 0.3A, 0.4A, 0.5A
and 0,6A.
1
1
(vii)Current/A Number of pins attracted
0.2
0.30.4
0.5
0.6
1
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(viii)
1
TOTAL 12
Number of pins attracted
Current
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