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PHYSICS
101.
A moving body with a mass m1 strikes a body of mass m2 which is stationary.
Assuming perfectly elastic impact, the ratio m1/m2 so as to decrease the velocity
of first body to 1.5 times is....
1) 1/25
102.
2) 2/5
3) 5
4) 25
A bullet of mass 100 gm moving with a velocity of 200 m/s just pierces through a
plank of 100 cm thick. If it is 50 cm thick, it emerges with a velocity of
1) 25 m/s
103.
2) 50 m/s
3) 100 / 3 m/s
4) 1002 ms-1
A body of mass 2 kg is sliding down the inclined plane of inclination 300 with
constant velocity. The coefficient of friction is 4/3. Then force applied on the
body parallel to the inclined plane
1) 9.8 N
104.
2) 19.6 N
3) 29.4 N
4) 39.2 N
A metal box is dragged on the ground through a distance of 42 m. coefficient of
friction between the box and the ground is 0.2. Then rise in temperature of the
box if specific heat of material of the box is 0.98 CGS units and J = 4.2 J/Cal
1) 0.010 C
105.
2) 0.020 C
3) 0.040 C
4) 0.050 C
A body of mass 1 gm is released down an inclined plane describes a circle of
radius 10 cm in the vertical plane on reaching the bottom. The minimum height of
that inclined plane is
1) 25 cm
106.
2) 25 2 cm
3) 243 cm
4) 12.5 cm
Two rigid bodies have the same angular momentum about their axes of
symmetry. If the same torque is applied about their axes the ratio of the times
after which they will be stopped is
1) 1:1
2) 1:2
3) 2:1
4)
data
is
insufficient
107.
Acceleration due to gravity on the surface of moon is 5th that at the surface of
the earth. If radius of the moon is 4th that of the earth, ratio of the mass of the
earth to mass of moon is
108.
1) 20
2) 40
3) 60
4) 80
A particle mass M at rest decays into two particles of masses m1 and m2. The
ratio of the de Broglie wavelengths of the particles, is
1) m1
2) m2
3) 1 : 1
m2
109.
m1
4) m2
m1
A doubly ionised helium atom and a hydrogen ion are accelerated by the same
p.d. The ratio of the velocities acquired by them is
1) 1:4
110.
2) 4:1
3) 2:1
4) 1:2
Two bodies M and N of equal masses are suspended from two separate
massless springs of spring constants K1 and K2 respectively. If the two bodies
oscillate vertically such that maximum velocities are equal, the ratio of the
amplitude of vibrations of M to that of N is
1)
109.
m1
m2
2)
m2
m1
3) 1 : 1
4)
m2
m1
A doubly ionised helium atom and a hydrogen ion are accelerated by the same
p.d. The ratio of the velocities acquired by them is
1) 1:4
110.
2) 4:1
3) 2:1
4) 1:2
Two bodies M and N of equal masses are suspended from two separate
massless springs of spring constants K1 and K2 respectively. If the two bodies
oscillate vertically such that maximum velocities are equal, the ratio of the
amplitude of vibrations of M to that of N is
K1
K
1) 1
2)
K2
K2
111.
3)
K2
K1
4)
K2
K1
Two wires 1 and 2 have their youngs moduli, diameters and lengths in the ratio
y1 : y2 = 1:3, d1 : d2 = 2:1 l1 : l2 = 5:1. If they are extended to the same extent by
applying two different forces F1 and F2 , then F1 : F2 is
1) 8:11
112.
2) 1:2
3) 3:5
4) 4:15
A tank is filled with a liquid and an orifice is made on the wall so that the
horizontal range R of liquid rushing out is maximum. If H is the height of liquid in
the tank from its base, then
1) 4R = H
113.
2) 2R = H
3) R = H
4) 3R = H
The density of the liquid of real coefficient of cubical expension  is  at 00 C.
When the liquid is heated to a temperature T the change in density will be
1)  T
(1 + T)
114.
2)  T
(1 + T)
3)  (1 + T)
T
4)  (1 + T)
T
743 J of heat energy is needed to raise the temperature of 5 moles of an ideal
gas by 2k at constant pressure. How much heat energy is needed to raise the
temperature of the same mass of the gas by 2k at constant volume. Given, molar
gas constant R = 8.3 Jk-1 mol-1
1) 826 J
these
2) 743 J
3) 660 J
4)
none
of
115.
If two balls, each of mass 0.06 kg, moving in opposite directions with speed 4
m/s, collide and rebound with the same speed, then the impulse imparted to each
ball due to the other is
1) 0.48 kg m/s
116.
2) 0.24 kg m/s
3) 0.81 kg m/s
4) zero
One end of a uniform wire of length L and of weight W is attached rigidly to a
point in the ceiling and a weight w1 is suspended from its lower end. If S is the
area of cross - section of the wire, the stress in the wire at a height 3L/4 from its
lower end is
1) w1/s
117.
2) (w1 + w/4)/s
3) (w1 + 3w/4)/s
4) (w1 + w)/s
When water flows at a rate Q through a capillary tube of radius r placed
horizontally, a pressure difference P develops across the ends of the tube. If the
radius of the tube is doubled and the rate of flow halved, the pressure difference
becomes
1) P/32
118.
2) P/8
3) P
4) 8P
A double convex lens has a focal length of 25 cm in air when it is dipped into a
liquid of refractive index 4/3, its focal length is increased to 100 cm. Find the
refractive index of the lens material
1) 1.5
119.
2) 1.414
3) 1.25
4) 1.75
What is the mutual inductance of a pair of coils if a current change of six ampere
in one coil causes the flux in the second coil of 2000 turns to change by 12 x 10-4
wb per turn
1) 0.4 H
120.
2) 4 H
3) 0.8 H
4) 8 H
Calculate the voltage needed to balance an oil drop carrying 10 electrons when
located between the plates of a capacitor which are 5 mm apart. (g = 10 ms2).
The mass of oil drop is 3.2 x 10-6 kg
1) 1010 V
121.
2) 1011 V
3) 1012 V
4) 1015 V
Two equally charged identical spheres A and B repel each other with a force of
2.0 x 10-5 N. Another identical uncharged sphere C is touched to A, then placed
at the mid-point between A and B. What is the net electrostatic force on C
122.
1) 2.0 x 10-5 N along CA
2) 2.0 x 10-5 N along CB
3) zero
4) 4.0 x 10-5 N along CA
A ray of light incident at an angle of 480 is refracted through a prism in its position
of minimum deviation. The angle of prism is 600. Calculate the refractive index of
the material of the prism (sin 480 = 0.74)
1) 1.48
123.
2) 1.58
In an n-p-n transistor
1010
3) 1.5
electrons enter the emitter in
4) 1.414
10-6
S, 2% of the
electrons are lost in the base. Calculate the current amplification factor in
Common base configuration is (charge of the electron is 1.6 x 10-19 C)
1) 0.98
124.
2) 98
3) 49
4) 0.49
In a given thermocouple, the emf at 2500 C and 500 C with respect to 00C are 40
v and
5 v respectively. Find the emf generated when the junctions are
maintained at the temperature of 2500 C and 500 C
125.
1) 45 v
2) 35 v
3) 50 v
4) 40 v
Given F1 + F2 = 16N and F1 +F2 | = 8N and F1 +F2 is perpendicular to
smaller force, then the individual forces are
1) 6N and 10N
126.
2) 8N and 8N
14N
The dimensions of 1/2
0
3) 4N and 12N
4)
2N
and
E2 (0 permittivity of free space, E : electric field
intensity) is
1) MLT-1
127.
2) ML2T-2
3) ML-1T-2
4) ML2T-1
The value of resistance is 10.845  and the value of current is 3.23 ampere. The
potential difference is 35.02935 volt. Its in significant number would be
1) 35 V
128.
129.
2) 35.0 V
3) 35.03 V
The stable nucleus that has a radius half that of Fe56 is
1) Li7
2) Na21
3) S16
4) 35.029 V
4) Ca40
A free neutron decays into a proton, an electron and ..........
1) a beta particle
2) an alpha particle
3) a neutrino
4)
an
antineutrino
130.
The tip of a needle does not give a sharp image on the screen. This is due to
1) polarisation
131.
2) intereference
3) diffraction
4) refraction
A p-n junction diode when forward biased has a drop of 0.5V which is assumed
to be independent of current. If the want to use a 1.5 V battery to forward bias the
diode, what should be the value of resistor used in series with the diode so that
the maximum current does not exceed 5 mA
1) 200 
132.
2) 100 
3) 150 
4) 250 
A magnetising field of 1600 Am-1 produces a magnetic flux of 2.4 x 10-5 wb in a
bar of iron of cross - section 0.2 cm2 . Calculate permeability
1) 7.5 x 10-4 TmA-1
2) 2.4 x 10-4 TmA-1
3) 2.4 x 10-5 TmA-1
4) 7.5 x 10-5
TmA-1
133.
Two bar magnets are bound side by side, and are suspended so as to swing
once 12 sec. when like poles are together. When the direction of one of the
magnets is reversed, the combination makes 3.75 vibrations per minute.
Compare the magnetic moments of the two magnets
1) 4 : 3
134.
2) 25:7
3) 50:7
4) 7:23
Two magnets of magnetic moments M and 3 M joined to form a cross (+). The
combination is suspended freely in a uniform magnetic field. In equilibrium
position, the magnet of magnetic moment M makes an angle  with the field Find


1) 300
135.
In the metre-bridge experiment with unknown resistance X in the left gap and
2) 450
3) 600
4) 900
known resistance of 60 in the right gap, null point is obtained at  cm from left.
If the unknown resistance X is shorted by an equal resistance what should be the
value of the known resistance in the right gap in order to get the null point at the
same position
1) 30
136.
2) 60
3) 45
4) 90
The rate of radiation from a black body at 00C is E. Then the rate of radiation
from this black body at 2730 C is
1) 16 E
137.
2) 8 E
3) 4 E
4) E
A capillary tube is immersed vertically in water such that the height of liquid
column in it is 5 cm, this arrangement is taken in to a mine of depth 'd' and the
height of the liquid, column is found to be 7.5 cm. If R is the radius of the earth,
find 'd' in terms of 'R'
1) R/3
138.
2) R/2
3) R/4
4) R/5
An air bubble rises from the bottom of a tank containing mercury. When it
reaches the top of a tank, its volume becomes 1½ times. Depth of mercury in that
tank is
1) 3.8 m
139.
2) 0.76 m
3) 0.38 m
4) 0.5 m
Two persons of masses m and 2m are standing on a horizontal smooth surface
of ice. They are initially seperated by a distance d. They are pulling each other
holding a rope. They meet at a distance
140.
1) 2d/3 from heavier person
2) d/3 from heavier person
3) 2d/4 from lighter person
4) d/3 from lighter person
A projectile is thrown with an initial velocity of (ai + bj) m/s. If the range of the
projectile is twice the maximum height reached by it, then
1) b = a/2
141.
2) b = a
4) b = 4a
A train moves towards a stationary observer with speed 34 m/s. The train sound
a whistle and its frequency registered by the observer is n1. If the train's speed is
reduced to
17 m/s, the frequency registered is n 2 . If the speed of
sound is 340 m/s, then the ratio
1) 18/19
142.
3) b = 2a
2) 1/2
n 1 / n2
3) 2
4) 19/18
A transverse wave is represented by y = y0 sin { 2/ (t - x) } . For what value
of  is the maximum particle velocity equal to twice the wave velocity
1)  = 2y0
2)  = 2y0
3)  = y0
3
143.
4)  = y0
2
A current is flowing in a circular coil of radius R and the magnetic field at its
centre is B0. At what distance from the centre on the axis of the coil, the
magnetic field will be B0/27
1) 23 R
144.
2) 22 R
3) 3 R
4) 8R
A ball is projected vertically upwards with a certain initial speed. Another ball of
the same mass is projected at angle of 600 with the vertical with the same initial
speed. At the highest point , the ratio of their potential energies will be
1) 4:1
145.
2) 3:2
3) 2:3
4) 1:4
A uniform rope of length 12m and mass 8 kg hangs vertically from a rigid
support. A block of mass 1 kg is attached to the free end of the rope. A
transverse pulse of wavelength
0.06 m is produced at the lower end of the
rope. What is the wave length of the pulse when it reaches the top of the rope
1) 0.06 m
146.
2) 0.12 m
3) 0.18 m
4) 0.03 m
A string under a tension of 100 N emitting its fundamental note, gives 5 beats per
second with a tuning tork. When the tension is increased to 121N again 5 beats
per second are heard. The frequency of the fork is
1) 110 Hz
147.
2) 105 Hz
3) 95 Hz
4) 100 Hz
The needle of a deflection magnetometer shows a deflection of 450 due to a
short bar magnet at a certain distancce in TanA position. If the distance is
doubled, what will be the deflection
1) Tan-1 (3/8)
148.
2) Tan-1 (8)
3) Tan-1 (1/8)
4) Tan-1 (1/3)
A horizontal wire carries 200 Ampere current below which another wire of linear
density
20 x 10-3 kg m-1 hangs in air parallel to it at a distance of 2 cm,
what is the current in this wire
149.
1) 98 A
2) 49 A
3) 196 A
4) 490 A
Two waves originating from sources S1 and S2 having zero phase difference and
common wavelength  will show completely destructive interference at a point P
if S1P - S2P is
1) 5
150.
2) 3/4
3) 2
4) 11/2
Two wires of the same material and having same volume but their cross sections
are in the ratio 3 : 1. They are joined in series. The resistance of the thicker wire
is 10. The total resistance of the combination will be
1) 40 
2) 40/3 
3) 5/2 
4) 100 
PHYSICS
Q.No. 101-110
Ans:
Q.No. 111-120
Ans:
Q.No. 121-130
Ans:
Q.No. 131-140
Ans:
Q.No. 141-150
Ans:
101
102
103
104
105
106
107
108
109
110
3
4
3
2
1
1
4
3
4
4
111
112
113
114
115
116
117
118
119
120
4
3
1
3
1
3
1
1
1
2
121
122
123
124
125
126
127
128
129
130
1
1
3
2
1
3
2
1
4
3
131
132
133
134
135
136
137
138
139
140
1
1
2
3
1
1
1
3
2
3
141
142
143
144
145
146
147
148
149
150
4
4
2
1
3
2
3
1
4
4