MINISTRY OF EDUCATION, SINGAPORE in collaboration with UNIVERSITY OF CAMBRIDGE LOCAL EXAMINATIONS SYNDICATE General Certificate of Education Advanced Level
9745101
PHYSICS Higher 2
Paper
1
Multiple Choice
Specimen Paper for examination from 2007
t
hour 15 minutes
Additional I\,,laterials. [,4ultiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended)
READ THESE INSTRUCTIONS FIRST Write ln soft pencil. Do not use staples, paper clips, highlighiers, glue or correction fluid-
Write your name, Centre number and index number on the Answer Sheet in the spaces provided unless this has been done for you. There are forty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separale Answer Sheet.
Read the instructions on the Answer Sheet very carefully. Fach correct answer will score one mark. A mark will nol be deducted for a wrong answer' Any rouqh working should be done in this booklet
This document consists of 22 printed pages. UNIVERSI
and Assessme.t Board
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Data speed of light in free space,
c=3.00"103msl
permeability of free space,
po=4'"r1o-7Hm1
permittivity of free space,
ro =
LBs x 10 12Fm
1
(1/(36r)) x 104Fm elementary charge,
e=1.60'10rec
the Planck constant,
h=6.63x10sJs
unified atomic mass constant,
u=1.66x10'?7kg
rest mass of electron,
m. = 9.11
rest mass of proton,
mp
molar gas constant, the Avogadro constant,
-
"
10-31kg
1.67 x 10
27
kg
R = 8.31 J K l mol-1 Ne=6.02x10'?3mo|-1 '1.38
x 10
lcr
the Bol?mann constant,
k=
gravitational constant,
G = 6.67 x 1o-11Nm'?kg
acceleration of free fall,
9 = 9.B1 ms-'?
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Formulae uniformly accelerated motion,
s=ut++at' v2=u2+2as
worKdone on/by a gas, hydrostatic pressure,
p:
gravitational potential,
,Gm p: r
pgh
displacement of particle in s.h.m. velocity of particle jn s.h.m.,
V:VICOS(Dt =
resistors in series, resistors in parallel, electric potential,
!. [*," - r,
R =R1 +
R2+...
1tR=1lRi+1lR2+... V
=Ql4n€or
T
:
exp(-2kd\
=
.lU$
altemating currenUvoltage, transmission coeff cient
*y.,"," p radioactive decay,
x:
decay constant,
^
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exp(-Zf)
, = 0 693
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4 What is a kilowatt hour?
o #3,
"
?333,
c
60 000J
Which vector triangle shows the resultant of the subtraction
A
-
Q
?
F
c
D
P
P
2005
P
3 600 000J
B
ii
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D
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5
velocity-time graph of a journey is shown in the diagram veiocity
time
What is the shape of the acceleration-iime graph for the same journey? acceleration
A 0
time
acceleration B
acceleration
c time acceleration
D
time
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6
ln an elastic collision the velocities of tlvo objects of masses 20kg and B0 kg are shown below'
5.0ms
1
before collision
10.2ms
1
after collision
What is the final velocity of the 20kg mass?
A
5
12.Bms' B -2.8ms-'
C
+2.8ms-1
D
+12.8 m
s=r
A child is sitting on a playground turntable and is rotating with uniform angular velocity.
The resultant force that the turntable exerts on the child is
'160
N. The weiqht of the child is 120 N-
What is the acceleration of the child?
A
0.88ms
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B
3.3ms
'?
C 8.6ms'
974510115P07
D
84.3m s
2
7
A beam of weight 160 N is supported at X and Y. Loading on the beam and dimensions are shown in the diagram.
l4jrn 0.40 m
0 90m
800 N
What support is provided by X and by Y? support at
@
x
support at Y
A
400
N
1960 N
B
400 N
'1160 N
c
570 N
990 N
D
740 N
B2O N
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A spring, fixed at one end, has a mass atiached to the other end. The mass bounces uP and down.
liis
shown in the diagram at three positions X, Y and Z-
z
mass moung up or down at centre with maximum speed
mass stationary at top
mass stationary at bottom
Which line gives the kinetic, graviiational potential and elastic potential energies? kinetic energy
gravitational potential energy
elastic potential energy
zero at top
maximum at top
maximum at top
B
maximum in centre
zero at bottom
maximum in cenlre
c
zero at bottom
zero at bottom
zero at top
D
maximum in centre
maximum at top
maximum at bottom
A crane lifting a container out of the hold of a ship is wofting at a rate of 670 kW. The container r. has a mass of40 tonnes (1 tonne = 1000kg) and is rising with constant speed of '1.3ms What is the efficiency of the arrangerrrcnt?
A O.O7A% B 7.A%
C
The unit of gravitational field strength is N kg
59%
D
760/"
D
Jksr
1.
What is an equivalent unit to this?
A Nm'zkg'
B kgm'
C
ms
2
'tO The Earth, at a distance of 1.50 x 10rr m from the Sun, orbits the Sun
in one year.
Jupiter is 7.83 x 101r m from the Sun.
What is its orbital period?
A
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2.28
yeats B
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5.22 yeats
11.9 years
D
27.2 yeats
9
11
A satellite falls from a point P to a point Q ctoser to the Earth's surface Which change in qravitaiional potential is possible?
A 40MJkglatPto 50l,4Jkg-r atQ B -5OMJkg at P ro -40 lMJ kg I at Q C 5OMJkg ' al P lo 40N4Jkg ' al Q D 40N4Jkq I at P to 5oMJkg I at Q '12 Which statement about
A B C D
a geostationary satellite is correct?
lt travels from east to west.
lt is vertically over the North Pole lt takes 9C minutes to orbit once around the Earth.
lt is accelerating.
13 Which graph shows velocity against displacement for a body
undergoing simple harmonic
motion?
displacement
displacement
displa
displacement
c velocjty
/o \0
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10
14
The displacement x of a molecule undergoing simple harmonic motion in a sound wave is given by
x = xo sin where x" = O.32mm and
/=
10
2rft
000H2
What is the maximLlm acceleration of the molecule?
A B C D
2.0'1
"
2.O1
,
101ms 1Oa
'z
rr|s-z
1.26 x 106ms'? 1.26 x lOems'
15 When
damping is increased on an object undergoing resonant frequency oscillation, which change does not occur?
A B C D 16
The amplitude of the driving oscillation decreases. The amplitude of lhe forced oscillation decreasesThe resonant frequency decreasesThe sharpness of the resonant peak decreases.
The random kinetic energy of all the gas molecules inside a tyre of an aircraft in flight is 63 ki. The translational kinetic energy of these molecules is 10 kJ. The randofi potential energy of the molecules is -2 kJ and the potential energy due to the height of the aircraft is 4ki. What is the internal energy of these molecules?
A 61kJ
B 65kJ
17 An ideal gas has a
volume of 5.3
C x
71
D
kJ
10 3 m3 when at
a
75kJ
pressure
of 1.04
,
10s Pa and a
temperature ol24oC. How many molecules does the gas contain?
A 027 18
B 3.9
c 1.6' 10'3
D
2.4x10?a
When a volatile liquid evaporates it cools down. What molecular behaviour is the reason for this cooling?
A B C D o uclEs
All lhe molecules slow down
The molecules collide with one another less frequently. Molecular collisions result in loss of kinetic energy of the molecules. Fast molecules leave the sudace so the mean speed of those left behind is reduced-
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19 Inanideal
gas at 50O oC, the mean kinetic energy of the gas molecules is 1 6
'
1O-'?3
J
What are the values for the temperature of the gas and the mean kinetic energy of the gas molecules when its molecules are, on average, travelling at twice the speed? temperature
20
/'c
kinetic enerqy / J
1000
3.2 x 1O
23
B
1300
3.2 v 10
23
c
2000
6.4 x 1O
23
D
2800
6.4 x 10
'z3
A radio wave used for a television transmission has a Wavelength of40cm Whai is the frequency of the transmission?
A 7.5MHz B 21
12O
MHz
C
750
MHz
D
12 000 [,4H7
A longitudinal wave cannot undergo
A B c D
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total internal reflection. polarisation. diffraction. interference.
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12
22
Energy lrom a point source of waves spreads out uniformly in all directions. The amplitude and intensity of the waves at a distance x from the source are A and 1 respectively, as shown. amplitude A intensity /
4x Assuming no absorption by the medium through which the waves are travelling, what are the amplitude and intensity at a distance of4x? intensity at distance 4x
amplitude at distance 4x
It16 B
Al16
c
Al2
D
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13
23
A diffraction grating is used to produce the characteristic ljne spectrum from a lamp that emits a red line (R), a green line (G)and a blue line (B). Which pattern of light through and beyond the grating is possible?
B light from lamp
R
light from lamp
G
G
grating
light from lamp
B
R G B
grating
G
light from lamp
B
R
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R
B
G
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B
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R B
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14
24 What is the pattern of the electric field between a positively charged conducting sphere and a metal plate near to it?
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The diagram shows a square meial plate with a potential of 500 V, and equipotential lines surroundinq it.
300v
How much work is done on an electrcn in crdei to move it from point P to point Q?
A -1.6 i 10 r7J B 4.8 x 10 17J C
+1.6 x 10
D
+4.8
:
17J
1o-r7J
Which statement about electric field and gravitational fleld is incorrect?
A B C D
Electric field is force per unit charge. Gravitational field is force per unit mass. At the end of an electric fleld line there will be a positive charge. At the end of a gravitational field line there will be a mass
27 What is the
definition of resistance?
A B
Resistance is the potential difference per Llnit current
C D
Resistance is the gradient of the graph of potential difference against current
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Resistance is given by the equation R = Pll,4. where p is the resistivity ofthe material, 7 is the length of the wire and A is its area of cross section.
Resistance ;s the voltaqe required for a current of one ampere-
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45tA1tSP07
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16 ln the circuit shown, a battery supplies a current of 0.025A for B0 s- During this time it produces '18 J of electrical energy while resistor M receives 1 1 J and resistor N receives 4-0 J.
What is the e.m.f. ofthe battery and its internal resistance L?
e.m.f. of battery
internal resistance of battery
1.5V
60o
B
9.0v
60()
c
9.0v
360c)
D
16.5V
360c)
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A 12V battery of negligible resistance is used with a potential dividerto provide a variable voltage across terminals P and Q.
load resistor Z
Theresistorsinthepotentialdividerareaf]xedresistorYofresistance200oandavariable resistorX whose resistance can be changed between 100() and 1200O
WhatrangeofpotentialdifferencescanbeobtainedacrosstheloadresistorwhenitsValueis 400 ()?
maximum/V
minimum/V
7.2
3.4
B
10.3
4.0
c
10.7
8.6
D
12.0
8.0
082 T An alpha particle travelling in a vacuum enters a uniform magnetic field of flux density 0 and is deflected into a circular path of radius 0 066 m.
What is the speed of the alpha particte? (mass of alpha particle = 6 7
A B C D
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5.1
!
'
10
'??
kg)
1o'zmtl
1.3 x 105ms
1
2.6 x 10sm s-1 1.3
"
106ms-l
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18
3l - Ari electron moves into a magnetic field and is deflected by it- The first diagram shows a side view of this and the second diagram shows the view with the electron as it initially comes towards an observer-
. ln which direction will the electron be deflected?
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.': ^^lxxxxxxxxx elecrron ^\r^^r^^^^^-< xxxxxxxxxxxx
side view; field into paper
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2005
--;--\
I
view frcm the
\magnetic
front
field
19
32 A sinusoidal voltage of maximum value Vo causes a sinusoidal current of maximum value /o as shown.
Which graph shows how the power varies with time together with the relationship between maximum power YJo and mean power yrns4ms?
\v.
c
r.v.
'107ms r? 33 What is the de Broglie wavelength of an electron travelling at a speed of 2.30 x
A B c D
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2.BB x 10r1m 12m
2.43
r
1O
3.16
'
10-11m
4.60 x 10 7m
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20
The graph shows how the maximum energy of photoelectrons varjes with the frequency f of the radiation used to produce the photoelectrons maxlmum energy of photoelectrons
frequency What does the gradient of this graph represent?
A e%
where e is the electronic charge and % is the stopping potential
B% C h Dhf 35
the Planck constant
X-ray spectra are taken from hro X ray tubes P and Q. The intensity of the X-rays is plotted against the wavelenqth in both cases and is shown below.
X-tay intensity
wavelength What deduction can be made from these plots?
A
X-ray tube Q has the higher voltage applied lo it and the target material in both tubes is the same.
B
X-ray tube Q has the higher voltage applied to it and the target materjals in the two tubes are different.
C
X-ray tube P has the higher voltage applied to ii and the target matenal in both tubes is the same.
D
X ray tube P has the higher voltage applied to it and the target mate als in the two tubes are different
oUct Fs
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21
36
The word LASER comes from the first letters of the words in the phrase Light Amplification by the Stimulated Emission of Radiation. What is meant by slimulated emissionz
37
A B C
an electron from a hlgher level falling to a lower level
D
a photon causinq another photon of the same frequency to be emitted from an excited atom
a charged particle causing light to be emitted from an excited atom a charged particle being emitted from an atom as a result of a high energy photon hitting the atom
Energy levels for electrons in materials vary with the separation of atoms as shown for a semi;nductor material in which the valence band is filled and the conduction band at low lemperatures rs emplY.
At which separation does the graph show the matedal behaving as a semiconductor at room temperature?
energy
interatomic distance
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22 Which diagram shows possible paths when alpha particles are deflected by a gold nucleus? B gold nuc leus
gold nucleus
o
alpha particles
alpha particles
''+--=\ ,+-===-\\ -+,-
--.._
\\\ \\\ c
D
gold nucleus
gold nucleus
o
alpha particles
39 The mass of a nucleus is
X
alpha particies
The total mass of its constituent protons and neutrons is Y.
What is the bindinq enerqy of the nucleus?
A X-Y 40
B Y-X
C
6-Yc
D
(v-x1c
A radioactive material has a hall-life of 4.3 x '107s. How many radioactive atoms are present in a source made of this material when it has an activity of8.7 1o'gBq?
i
A 2ox1o2
Permssion r,aasomb e
B 29x1o2
c 37 x
lO11
D
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UNIVERSITY"/CAMBRIDC: International Examinations
MULTIPLE CHOICE ANSWER KEY Subject
Name:
H2 Physics Specimen Paper
P ease cornplete the deta ls
below n the irsl row of boxes
2
(lflhe same key h to be used for aternative papers peasecompele
45
01
21
D
22
3
SLrbleclNo 97
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Dale
Fi6i Prooi [4oderated
Second Revised Proof
s gnalure of slbject otlce. cenifv nq that
ke!
s
corcct
Date
23
c
4
B
24
B
5
c
25
D
6
B
26
c
7
D
27
8
D
2A
I
c
29
10
c
,]0
c
31
D
11 S gnalure
B
B
12
D
32
D
13
c
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c
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c
c
15
35
16
36
D
17
c
37
B
18
D
38
B
19
D
39
D
2A
c
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D
