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2005-CE
PHY
2
F.5 MOCK EXAMINATION
PHYSICS PAPER 2
1.
Read carefully the instructions on the Answer Sheet and insert the information required (including
the Subject Code) in the spaces provided.
2.
When told to open this paper, you should check that all the questions are there. Look for the words
‘END OF PAPER’ after the last question.
3.
All questions carry equal marks.
4.
ANSWER ALL QUESTIONS. You should mark all your answers on the Answer Sheet.
5.
You should mark only ONE answer for each question. If you mark more than one answer, you will
receive NO MARKS for that question.
6.
No marks will be deducted for wrong answers.
1
There are 27 questions in Section A and 18 questions in Section B. The last page of this question
paper contains a list of physics formulae which you may find useful.
Take g = 10 m s-2.
Unless otherwise specified, all the cells are assumed to have
negligible internal resistance.
Section A
1.
A pendulum bob suspended by a string above the ground. It is then raised to point A and
released as shown.
A
Diagram not drawn to scale
B
ground
When the bob reaches its lowest position B, which of the following graphs best illustrate how the
variations of potential energy (PE) and kinetic energy (KE) of the bob?
A.
energy
B. energy
KE
PE
PE
KE
0
position
A
C.
0
position
A
B
energy
B
D. energy
KE
PE
PE
KE
0
0
position
A
B
position
A
B
2
2.
Which of the following factors could affect the inertia of an object?
(1) The mass of the object
(2) The force acting on the object
(3) The shape of the object
A.(1) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
3.
A car speeds up from rest at a uniform acceleration of 5 m s−2 for 2 seconds. Then, it slows down
at a uniform acceleration of 3 m s−2 for 2 seconds. Which of the following statements are
correct?
(1)
(2)
(3)
The displacement of the car is zero at 4 s.
The velocity of the toy car is 4 m s-1 at 4 s.
The average velocity of the toy car is +6 m s-1.
A.(1) only
B. (2) only
C. (1) and (3) only
D.(2) and (3) only
4.
A hydrogen balloon of mass 50 g is attached to the ground by a piece of string as shown. When
the string breaks, the balloon rises up with an acceleration of 2 m s-2. What is the tension in the
string before its breaks?
balloon
A.0.05 N
B. 0.1 N
C. 0.55 N
D.0.6 N
5.
Two identical blocks A and B travel down two different tracks as shown.
A
B
2m
2 m
6 m
10 m
Assuming that friction is negligible. Which of the following statements are correct?
(1) The potential energy lost by block A is the same as that of block B when they reach the end
of the track.
(2) The speed of block A is the same as that of block B when they reach the end of the track.
(3) Block A and block B reach the end of the track at the same time.
A.(1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
3
6.
The graph below shows how the force applied on the object changes with its displacement. What
is the total work done on the object for travelling a displacement of 40 m ?
F / 103 N
4
2
s/m
10
20
30
40
A.160 kJ
B. 140 kJ
C. 120 kJ
D.100 kJ
7.
temperature rises to 25 °C, its re
when it is placed in pure boiling water? Assume that the resistance of the wire increases linearly
with the temperature.
A.
B.
C.
D.
8.
A bucket of sand of mass 3 kg has a heat capacity of 630 J °C-1. How much energy is required to
raise the temperature of the sand by 4 °C.
A.1160 J
B. 2520 J
C. 4640 J
D.7560 J
9.
Energy is transferred to two liquids A and B at the same rate. The two liquids have the same mass.
The graph below shows how their temperatures change with time.
temperature / K
T
A
B
time / hour
0
1
2
4
When the liquids have been heated for an hour, which of the following statements concerning them
must be correct? (Assume heat lost to the surroundings can be neglected)
(1)
(2)
(3)
The energy absorbed by both liquids are the same.
The temperature of both liquids are the same.
The internal energy of both liquids are the same.
A.(1) only
B. (2) only
C. (1) and (3) only
D.(1), (2) and (3)
10. The following figure shows the interior of an industrial electric oven. The walls are silvery in
appearance so that
A.they are easier to clean.
B. the interior of the oven looks brighter.
C. the walls are more durable.
D.the walls absorb less heat from the heating element inside the oven.
11. Which of the following substances would be a liquid at a temperature of 600 °C?
A.
B.
C.
D.
12.
substance
aluminium
mercury
potassium
silver
melting point / °C
660
-33
64
962
boiling point /°C
2477
367
785
2212
Which of the following objects emit infrared radiation?
(1)
Molten metal
(2) Human body
(3) A piece of ice
A.(1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
5
13.
Which of the following phenomena of light enable us to observe the image formed on a lake as
shown?
(1)
Diffraction
(2)
Refraction
(3)
Reflection
A.(1) only
B. (3) only
C. (1) and (2) only
D.(2) and (3) only
14.
A ray of white light travels from air to glass at an angle of incidence of 60° as shown.
Suppose the refractive indices of the glass for red light and blue light are 1.621 and 1.639
respectively. Find the angle between the paths of red light and blue light in the glass.
A.0.2°
B. 0.4°
C. 0.6°
D.0.8°
6
15.
16.
Which of the following figures best represent the cross section of a train of water waves when it
travels from a deep region to a shallow region?
A.
direction of travel of the wave
B.
direction of travel of the wave
C.
direction of travel of the wave
D.
direction of travel of the wave
A longitudinal wave is travelling from left to right in a medium. Figure a shows the equilibrium
positions of some particles A to L in the medium. Figure b shows the positions of the particles at
a certain time t when the wave is passing through them.
A
B
A
C
B
D
C
E
D
F
E
G
F G H
H
I
I
J
J
K
K
L
figure a
L
figure b
5 cm
Which of the following particles are vibrating in phase?
A.Particles A and D
B. Particles A and G
C. Particles D and G
D.None of the above
17. Which of the following statements about a standing wave is NOT correct?
A.Energy is transferred from one place to another but confined somewhere in the space.
B. The waveform is stationary all the time.
C. There are no disturbances at the nodes.
D.All points on the wave reach their corresponding maximum vibrations at the same time.
18.
A man standing 600 m from a vertical cliff claps his hands and hears the echo 3 s later. Find the
velocity of sound in air from this observation.
A.200 m s-1
B. 300 m s-1
C. 400 m s-1
D.600 m s-1
7
19.
Some trucks, especially those carrying combustible fuel, have metal chains attached to their
bottoms that drag along the ground. The chain is used to
(1)
(2)
(3)
discharge static electricity.
get rid of moisture.
build up positive charges.
A.(1) only
B. (2) only
C. (1) and (3) only
D.(2) and (3) only
20.
Three resistors are connected to a battery as shown.
The current flowing through the 6
A and B?
A.4.8 V
B. 9.6 V
C. 14.4 V
D.24 V
21.
A straight current-carrying wire is placed inside a uniform magnetic field. In which of the
following cases will the wire experience a magnetic force?
(1)
(2)
(3)
wire
wire
 wire
magnetic field
magnetic field
magnetic field
A.(1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
8
22.
A nuclide 146 X decays into another nuclide
above decay process is correct?
(1)
14
6
X and
14
7
(2)
14
6
X decays by emitting a  particle.
(3)
14
7
14
7
Y . Which of the following statements about the
Y are isotopes.
Y has one more proton than 146 X .
A.(1) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
23.
The activity of a radioactive substance falls to 40 s 1 in 30 minutes. The half-life of the
substance is 10 minutes. What is the initial activity of the substance?
A. 80 s 1
B. 160 s 1
C. 320 s 1
D. 640 s 1
Directions: Each question below (Questions No. 24 and 27) consists of two separate statements.
Decide whether each of the two statements is true or false. If both are true, then decide
whether or not the second statement is a correct explanation of the first statement. Then
select one option A, B, C or D according to the following table:
1st statement 2nd statement
A.
True
True
B.
True
True
C.
True
False
D.
False
True
2nd statement is a correct explanation of the
1st statement
2nd statement is not a correct explanation of the
1st statement
1st statement
2nd statement
24.
The lighting circuit and the ring circuit are
protected by circuit breakers.
If there is current leakage, the current will
flow directly from the live wire to the earth
via the circuit breaker.
25.
A straight current-carrying copper wire can
produce a magnetic field.
Copper becomes magnetized when a current
passes through it.
26.
Gamma radiation is used to treat patients with
cancers.
Gamma radiation can kill cancer cells, and
does not harm normal cells.
27.
The linear magnification of the image formed
by a convex lens is always greater than one.
Convex lens can form an erect and
magnified image.
9
Section B
28.
A ball of weight W is released from the top of a building. Because of the air resistance, the speed
of the ball increases and then reaches a constant value at time t. Which of the following graphs
correctly show how the speed of the ball changes with time?
A.
B.
speed / m s
speed / m s
speed / ms-1
-1
0
t
t
time / s
time / s
t
C.
D.
speed / m s
0
29.
0
time / s
0
-1
speed / m s
-1
0
time / s
t
-1
t
time / s
A student standing on a stage throws a small ball upwards at an initial speed of 15 m s−1 from a
height of 5 m above the ground. What is the speed of the ball just before it hits the ground?
A.16.0 m s-1
B. 17.0 m s-1
C. 18.0 m s-1
D.19.0 m s-1
30.
Three forces of magnitudes F1, F2 and 30 N act on an object as shown. If the object is in
equilibrium, find F2.
F
1
20
F2
30 N
A.10.9 N
B. 11.5 N
C. 17.3 N
D.20.0 N
10
31.
Two blocks of mass m and 2m travel at velocities of 2v and v on a smooth surface as shown.
2v
v
m
2m
smooth horizontal surface
If the blocks stick together after collision, what is their common velocity?
A.v
3v
B.
2
4v
C.
3
D.3v
32.
A golf ball of mass 50 g is initially at rest. It is then struck by a club at a speed of 20 m s-1. If the
club and the ball are in contact for 3 × 10-3 s, what is the average force acting on the ball?
A.115 N
B. 215 N
C. 333 N
D.450 N
33. A liquid of mass 0.5 kg is heated in a polystyrene cup with a 1000 W heater. The graph below
shows how the temperature of the liquid varies with time.
temperature / °C
115
25
time / min
3
9
What is the specific latent heat of vaporization of the liquid?
A.360 000 J kg-1
B. 400 000 J kg-1
C. 600 000 J kg-1
D.720 000 J kg-1
11
34. The increase in concentration of carbon dioxide in the atmosphere can lead to global warming. This
is because
A.carbon dioxide is a poor conductor of heat.
B.energy escapes from the Earth to the space decreases.
C. a larger amount of radiation from the space reaches the Earth.
D.carbon dioxide can provide heat to the Earth.
35.
Diffraction of light is more difficult to observe than diffraction of sound because
A.light is a transverse wave while sound is a longitudinal wave.
B. light travels much faster than sound.
C. the wavelength of light is much smaller than that of sound.
D.light is an electromagnetic wave.
36.
S1
S2
35 cm
30 cm
P
A train of straight water waves travels towards a straight barrier with two openings. Two sets of
circular waves are produced on the other side of the barrier. The distance of a point P from S1
and S2 are 35 cm and 30 cm respectively. Suppose constructive interference occurs at P. What is
the possible wavelength of the wave?
A.1 cm
B. 2 cm
C. 3 cm
D.10 cm
12
37.
direction of travel of the wave
cork
In a pond, a train of water waves passes through a cork floating on the water surface. At time t =
0, the position of the cork is shown in the figure above. Which of the following
displacement-time graphs represent the motion of the cork? The displacement of the cork is
positive when it is above the still water surface.
A.
displacement
0
C.
D.
time
displacement
0
time
displacement
0
38.
B.
time
displacement
0
time
The figure below shows the path of a light ray travelling through a glass prism. The refractive
index of the glass must be larger than
A.1.00
B. 1.21.
C. 1.41.
D.1.52.
13
39.
The frequencies of note C and note E are 256 Hz and 320 Hz respectively. Which of the
following statements are correct?
(1)
(2)
(3)
Note E have a higher pitch than note C.
Note E must have a larger loudness than note C.
Note E have a shorter wavelength than note C.
A.(1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
40.
A battery marked 9 V is connected to a 6
what of the following would most likely be the current flowing through the circuit?
A.equals to 1.5A
B. a little larger than 1.5 A
C. a little smaller than 1.5A
D.zero
41.
A magnet is dropped through a solenoid as shown. The ends of the solenoid are connected to a
centre-zero galvanometer.
S
motion of magnet
N
A
solenoid
G
centre-zero galvanometer
hollow paper cylinder
B
The maximum induced current can be increased by
(1)
(2)
(3)
using a stronger magnet.
using a solenoid with more number of turns.
connecting a resistor in parallel with the centre-zero galvanometer.
A.(1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
14
42.
An electric field is set up between two metal plates carrying unlike charges. A negatively charged
particle is placed in the field as shown. What are the directions of the electric field and the force
acting on the particle?

A.
B.
C.
D.
43.
The electric field





+
The electric force




The figure below shows a simple generator.
Which of the following graphs best shows the variation of the induced current I against time t?
A.
I /A
0
C.
B.
t /s
I /A
0
0
D.
t /s
I /A
t /s
I /A
0
t /s
15
44.
The magnitude of a simple d.c. generator’s output voltage varies with time as shown below.
magnitude of the voltage / V
0
0.05
0.1
0.15
time / s
When the frequency of rotation of the coil increases to 20 Hz,
(1)
the frequency will be doubled.
(2)
the maximum magnitude of the output voltage would be larger.
(3)
the waveform would be narrower if the same time-base is used.
A.(1) and (2) only
B. (1) and (3) only
C. (2) and (3) only
D.(1), (2) and (3)
45.
The primary coil and the secondary coil of a transformer are connected to a 20 V a.c. power
supply and a resistor R respectively as shown. The primary coil has 200 turns while the
secondary coil has 50 turns. Suppose the transformer has an efficiency of 80%, what is the
resistance of R if the primary current is 1 A?
20 V a.c.
power
supply
R
50 turns
200 turns
A.
B.
C.
D.
END OF PAPER
16
Useful Formulae in Physics
(a) Relationships between initial velocity u, uniform acceleration a, final
velocity v and displacement s after time t:
v = u + at
1 2
s = ut +
at
2
v2 = u2 + 2as
(b) Potential energy gained by a body of mass m when raised through a height h
is mgh.
(c) Kinetic energy of a body of mass m moving with speed v is
1 2
mv .
2
(d) Power = force  velocity
(e) Equivalent resistance of two resistors R1 and R2:
(i) in series = R1 + R2
RR
(ii) in parallel = 1 2
R1  R2
(f) Power = potential difference  current
17
Answers – 0405 F5 mock exam Physics Paper 2
1
2
3
4
5
A
A
D
B
A
11
12
13
14
15
C
D
B
B
B
21
22
23
24
25
A
C
C
B
C
31
32
33
34
35
C
C
D
B
C
6
7
8
9
10
B
C
B
A
D
16
17
18
19
20
D
B
C
A
B
26
27
28
29
30
C
D
C
C
A
36
37
38
39
40
A
D
C
B
C
41
42
43
44
45
A
C
C
D
B
18