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01-AL-PHY-II A / p.1
1.
A block rests on a rough inclined plane. Which of
the following diagrams correctly shows the lines of
application of all the forces acting on the block?
(The dot  represents the center of mass of the
block.)
4.
Which of the following is/are vector quantities?
(1) impulse
(2) moment of inertia
(3) pressure
A.
B.
C.
D.
E.
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1) ,(2) and (3)
5.
An object accelerates uniformly along a straight
line from X to Z. It passes X and Z with speed u and
v respectively. What is its speed when it passes Y,
which is the mid-point of XZ?
2.
Which of the following pairs of forces is/are
example(s) of action and reaction?
(1) The centripetal force keeping a satellite in
orbit round the earth and the weight of the
satellite.
(2) The air resistance acting on an object falling
through the air with terminal velocity and the
weight of the object.
(3) The forces of attraction experienced by two
parallel wires carrying currents in the same
direction.
A.
B.
C.
D.
E.
3.
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
A stone is projected at an angle of 45˚ to the
horizontal with an initial kinetic energy E.
Neglecting air resistance, when the stone is halfway
up, its kinetic energy is
A.
E
4
B.
E
2
C.
D.
3E
4
E
2
E.
E
A.
u2  v2
2
B.
uv
C.
2uv
uv
D.
E.
6.
uv
2
It cannot be found as the distance
between X and Z is not known.
For an object oscillating with simple harmonic
motion, which of the following quantities will
reach the maximum value when the object is at its
maximum displacement?
(1) the restoring force acting on the object
(2) the total potential energy of the system
(3) the speed of the object
A.
B.
C.
D.
E.
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
01-AL-PHY-II A / p.2
7.
The maximum speed of a simple harmonic
oscillator is 1ms-1 and its amplitude is 0.5 m. What
is the speed of the oscillator when its displacement
from the equilibrium position is 0.3 m?
A.
B.
C.
D.
E.
0.2 ms 1
0.36 ms 1
0.4 ms 1
0.6 ms 1
0.8ms 1
10.
A small sphere is connected to one end of a string
which passes through a hole on a horizontal
frictionless board. The other end of the string is
pulled by a downward force F so that the sphere
describes a uniform circular motion with radius r
as shown.
8.
The force F is gradually increased until the radius
reduces steadily to r/2. What is the ratio of the new
kinetic energy of the sphere to its original kinetic
energy? (Neglect any friction between the string
and the hole.)
The figure shows a swinging simple pendulum,
starting from a point higher than P. Which of the
following forces is/are acting on the pendulum bob
when it is at P? (Neglect air resistance)
(1) the weight of the bob
(2) a force exerted by the string pointing
towards O
(3) a third force along the direction of
motion of the bob
A.
B.
C.
D.
E.
9.
(1) only
(3) only
(1) and (2 only
(2) and (3) only
(1) , (2) and (3)
A solid cylinder and a hollow cylinder, each having
the same mass and external radius, are released
together from rest, side by side, at the top of a
rough inclined plane. Both cylinders roll down the
inclined plane without slipping. Which of the
following statements is INCORRECT?
A. The solid cylinder has a smaller moment of
inertia about its axis.
B. The solid cylinder reaches the bottom of the
incline first.
C. There is no work done by each cylinder
against the friction due to the incline.
D. The total kinetic energy of each cylinder is the
same at the bottom of the incline.
E. The solid cylinder has greater rotational
kinetic energy at the bottom of the incline.
A.
B.
C.
D.
E.
4:1
2:1
1:1
1:2
1:4
11. The SI unit of time, second, used to be defined as
9 192 631 770 times the period of the
electromagnetic wave emitted from a caesium-133
atom. In which region of the electromagnetic
spectrum is this wave to be found?
A.
B.
C.
D.
E.
infra-red
ultra-violet
radio wave
microwave
visible
12. In which of the following cases can the principle of
superposition be applied to two overlapping waves
of the same nature?
A. Only when the two waves have the same
frequency.
B. Only when the two waves have the same
amplitude.
C. Only when the two waves travel in opposite
directions.
D. Only when the two waves are coherent.
E. It can be applied in all cases.
01-AL-PHY-II A / p.3
13. A student prepares a double-slit set-up as shown
below. However, no interference fringe can be
observed on the screen.
17.
Initially the directions of polarization of P and Q
are parallel but are both normal to that of R. What
happens to the intensity I recorded by the detector
when Q is being rotated slowly through 90˚ until
its direction of polarization is parallel to that of R?
Your suggestion for improvement may be
A. using a mercury lamp to provide radiation
of a shorter wavelength.
B. reducing x.
C. reducing D.
D. increasing a.
E. reducing d.
14.
Which of the following statements concerning
Newton’s rings is/are correct?
(1)
(3)
A.
B.
C.
D.
E.
15.
I remains unchanged
I increases throughout
I decreases throughout
I increases and then decreases
I decreases and then increases
18.
A boy sitting at the rim of a rotating
merry-go-round blows a whistle continuously with
frequency fo. An observer on the ground hears the
sound of the whistle. Which of the graphs below
gives the possible variation of the observed
frequency f of the sound in a period of revolution
T?
19.
Kepler discovered that the line joining the Sun and
a revolving planet sweeps out equal areas in equal
times. The physical law which most directly
explains this phenomenon is
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
What is the intensity ratio of a note of 60 dB
compared with another note of 40 dB which has
the same frequency?
A.
B.
C.
D.
E.
16.
A.
B.
C.
D.
E.
A convex lens with long focal length
should be used.
Adjacent rings become farther apart when
moving outwards from the central spot.
The central spot is bright when some liquid
is introduced between the convex lens and
the reflector.
(2)
Three polaroid sheets P, Q and R are placed along a
straight line with a lamp and a detector as shown.
1.5
15
20
100
200
The focal length of a concave mirror is f. The
mirror will produce a real, inverted and diminished
image when the distance of the object from the
pole of the mirror is
A.
B.
C.
D.
E.
greater than 2f
equal to 2f
between f and 2f
equal to f
less then f
A.
B.
C.
D.
E.
Newton’s first law of motion.
Newton’s third law of motion.
Newton’s law of universal gravitation.
conservation of angular momentum.
conservation of energy.
01-AL-PHY-II A / p.4
20. Two insulated uncharged metal spheres X and Y are
in contact with each other. A positively charged rod
is brought near X without any contact while sphere
X is earthed as shown.
23.
The two plates of a parallel-plate capacitor initially
carry equal amounts of positive charge. If some
charges are transferred from one plate to another,
the charges on the plates are respectively
+900  C and +100  C. The potential difference
across the plates becomes 4 V. what is the
capacitance of the capacitor?
A.
B.
C.
D.
E.
At steady state, which of the following descriptions
is/are correct?
(1)
(2)
(3)
(4)
Sphere X gains electrons.
Sphere Y loses electrons.
Sphere X acquires a negative electric
potential.
Sphere Y acquires a positive electric
potential.
A.
B.
C.
D.
E.
24.
(1) only
(1) and (2) only
(1) and (3) only
(2) and (4) only
(1), (2), (3) and (4)
(3)
The above figure shows a network of resistors. If a
voltage of 100 V is applied across terminals A and
B, the potential difference between C and D is 80V.
If the voltage is applied across terminals C and D
instead, what is the potential difference between A
and B?
A.
B.
C.
D.
E.
22.
provide a mean current of 1 mA for 2000s.
be completely discharged through a 10 
resistor in 1 s.
store 40 J of electrostatic energy.
A.
B.
C.
D.
E.
25.
80 V
60 V
40 V
20 V
It cannot be found as the value of R is
not known
X and Y are bulbs with ratings ‘ 6V, 12 W ’ and
‘ 6V, 3 W’ respectively. If they are connected to a
12 V supply of negligible internal resistance, which
of the following connections allows the two bulbs
to work at their respective rated values?
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
If the separation between the plates of a
parallel-plate capacitor is increased by 20%, its
capacitance will
A.
B.
C.
D.
E.
26.
F
F
F
F
F
A ‘jumbo’ capacitor has capacitor 100 000  F.
Such a capacitor charged to 20 V would
(1)
(2)
21.
25 
100 
125 
200 
225 
decrease by 17%
increase by 17%
decrease by 20 %
increase by 20 %
decrease by 25 %
Magnetic flux is measured in weber. Which of the
following is/are equivalent to weber?
(1)
(2)
(3)
henry-ampere
volt-second
tesla-metre
A.
B.
C.
D.
E.
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
01-AL-PHY-II A / p.5
27.
Which of the following properties is NOT common
to both electric and magnetic fields?
30.
A. Both can be ‘shielded’ using suitable
materials.
B. Both can exert attractive and repulsive
forces.
C. Both can deflect moving charged
particles.
D. Both can be represented by field lines of
closed loops.
E. Both can store energy.
In an a.c. circuit, two components, one of
resistance 5  and the other of inductive
reactance 10  , are connected in series to the
source. The r.m.s. current is 2A.What is the
average power dissipated as heat in the circuit?
A.
B.
C.
D.
E.
10 W
20 W
40 W
45 W
60 W
31.
Which of the following waveforms CANNOT be
obtained by applying sinusoidal voltages to both
X-and Y-inputs of a CRO?
32.
Which of the following is NOT a basic assumption
of the kinetic theory of an ideal gas ?
28.
The figure shows a light and flexible conducting
loop C freely hung on a smooth horizontal rail. A
bar magnet PQ approaches the loop from the right.
Which of the following descriptions about this
process is correct?
A. If P is an N-pole, the loop will be
repelled to the left and its area will
increase slightly.
B. If P is a S-pole, the loop will be repelled
to the left and its area will increase
slightly.
C. If P is an N-pole, the loop will be
attracted to the right and its area will
decrease slightly.
D. No matter whether P is an N-pole or a
S-pole, the loop will be repelled to the
left and its area will increase slightly.
E. No matter whether P is an N-pole or a
S-pole, the loop will be repelled to the
left and its area will decrease slightly.
29.
A.
B.
C.
D.
E.
33.
Which of the following descriptions about a
moving-coil meter is/are correct?
(1)
(2)
(3)
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
The first law of thermodynamics can be expressed
as U  Q  W . When an ideal gas is
compressed while keeping its pressure constant,
which of the following holds?
Q
It has a massive soft iron core to provide
damping.
It has curved magnetic poles to assist in
producing linear scale.
It has weak hair springs to increase the
sensitivity.
A.
B.
C.
D.
E.
All molecules are in random motion.
All molecules move with the same
speed at a certain temperature.
All molecules are point particles that
have no physical size.
All collisions are perfectly elastic.
All molecules do not exert force on
one another except during collisions.
A.
B.
C.
D.
E.
34.
positive
positive
zero
negative
negative
U
negative
positive
negative
negative
negative
W
negative
positive
negative
negative
positive
The concept that “energy change occurs in discrete
and not continuous amounts” is NOT REQUIRED
to explain
A.
B.
C.
D.
E.
absorption line spectrum
nuclear fission
emission of  –rays in radioactive decay
photoelectric effect
X-rays line spectrum emitted in X-ray tubes
01-AL-PHY-II A / p.6
35.
The interatomic force between pairs of similar
atoms consists of two components. These are
(1)
(2)
a short-range repulsive force which varies
inversely as r 6
a long-range attractive force which varies
inversely as r 3 , where r = interatomic
separation.
Given that a and b are positive constants, and
repulsive force is taken as positive, which of the
following correctly expresses in mathematical form
the interatomic potential energy of a pair of atoms?
A.
a
b
 4
7
r
r
B.

C.
D.
E.
36.
37.
a
r
a
r6

6

a
The graph above shows the tensile stress-tensile
strain curves for three materials X, Y and Z up to
their breaking points. Which of the following
statements is/are correct?
(1)
(2)
(3)
b

r
3
b
X is stiffer than Y.
Y is stronger than Z.
Z can be stretched to twice its
original length without breaking.
r3

A.
B.
C.
D.
E.
b
r5 r2
a
b
 2
5
r
r
In an experiment to determine the Young modulus
for a steel wire, a student obtained the following
data:
length of steel wire
diameter of steel wire
mass of the load
extension
acceleration of free fall
=
=
=
=
=
1.96  0.01m
0.61  0.01mm
10.00  0.01kg
3.9  0.1mm
9.8  0.1 ms 2
Which of the following leads to the greatest
uncertainty in the calculated value of the Young
modulus?
A.
B.
C.
D.
E.
.
measurement of length
measurement of diameter
measurement of load
measurement of extension
assumed value of the acceleration of
free fall
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
38.
The above diagram shows the steady flow of water
through a horizontal uniform pipe with a central
narrow section near Y. The water levels in
manometers at X, Y and Z indicate the pressure in
each section. The levels in Y and Z are NOT shown.
Which of the following statements is/are correct?
(1)
(2)
(3)
The water speed in the narrow section is
greater than the speeds in other sections.
The water speed in section Z is equal to that
in section X.
The water level in manometer Y is the
highest.
A.
B.
C.
D.
E.
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
01-AL-PHY-II A / p.7
39.
A certain photocell emits electrons when
illuminated with yellow light. This photocell will
PROBABLY NOT emit electrons when illuminated
with
A.
B.
C.
D.
E.
40.
Isotopes must have the same
(1)
(2)
(3)
blue light
green light
red light
ultra-violet radiation
X-rays
Which of the following electron transitions
between energy levels in an atom will emit
electromagnetic radiation of the highest frequency?
A.
B.
C.
D.
E.
43.
nuclear binding energy.
number of nucleons.
number of protons.
A.
B.
C.
D.
E.
44.
n = 2 to n = 1
n = 3 to n = 2
n = 4 to n = 3
n = 4 to n = 2
n = 5 to n = 2
Given:
A.
B.
C.
D.
E.
45.
A.
B.
C.
D.
E.
42.
150 k 
270 k 
300 k 
540 k 
600 k 
The activity of a radioactive sample was 70 Bq at
time t = 5 minutes and 49 Bq at t = 10 minutes.
Deduce its activity at time
t = 0.
A.
B.
C.
D.
E.
112 Bq
100 Bq
95 Bq
91 Bq
80 Bq
mass of proton = 1.0078 u
mass of neutron = 1.0087 u
mass of deuteron 12 H = 2.0146 u
1 u is equivalent to 931 MeV
Calculate the binding energy per nucleon, in MeV,
of a deuteron.
41.
In the above transistor circuit, the voltage across
the base and the emitter is 0.6 V when the
transistor conducts. The current amplification
factor of the transistor is 100. If the output voltage
is 2 V, what is the value of R?
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)
9.5  10 4
1.9  10 3
8.8  10 1
9.4  10 2
1.9  10 3
The table below gives the corrected count rate (in
counts per minute) from three samples of
radioactive isotopes at three different times.
Isotope
X
Y
Z
0 min
480
135
168
20 min
243
32
118
40 min
119
9
93
The above data show that
(1)
(2)
(3)
X produces the most penetrating
radiation.
Y has the largest decay constant.
Z has the longest half-life.
A.
B.
C.
D.
E.
(1) only
(3) only
(1) and (2) only
(2) and (3) only
(1), (2) and (3)