1: The angular speed of minute hand of clock in degree per second is
a. 1
b. 0.1
c. 0.01
d. 0.001
2: Which determines the nature of path followed by particle?
a. speed
b. acceleration
c. velocity
d. All of above
3: The direction of angular velocity is
a. away from axis of rotation
b. normal to axis of rotation
c. along axis of rotation
d. all of these
4: The units of angular acceleration
a. $$
b. $\mathbf{[ML^2]}$
c. $[ML^{-4}]$
d. all of these
5: A wheel of radius of 1m turns through an angle, it lays out a tangential distance
a. s =
b. s =
c. r =
d. all of these
6: The dimensions of moment of inertia are
a. $[ML^{-2}]$
b. $\mathbf{[ML^2]}$
c. $[ML^{-4}]$
d. none of these
7: Torque per unit moment of inertia is equivalent to
a. radius of gyration
b. angular acceleration
c. angular velocity
d. inertia
8: A circular disk starts slipping without rolling down an inclined plane then its velocity
will be
a.
b.
c.
d.
9: A ring is rolling on an inclined plane. The ratio of linear and rotational kinetic energies will be
a. 1:1
b. 1:2
c. 2:1
d. 3:1
10: The relation between the linear and angular velocity
a.
b.
c.
d. all of these
11: A planet which is twin sister of earth is
a. Mars
b. Mercury
c. Jupiter
d. none of these
12: Angular momentum of a rigid body about its axis of rotation is
a.
b.
c.
d. none of these
13: The spin and orbital angular momentum are usually differentiated in terms of
a. radius of bodies
b. mass of bodies
c. direction of bodies
d. all of these
14: If body is moving clockwise, then angular displacement is taken to be
a. positive
b. negative
c. zero
d. maximum
15: Which remains constant in field of central force
a. kinetic energy
b. potential energy
c. linear momentum
d. angular momentum
16: Angular momentum is
a. scalar
b. polar vector
c. axial vector
d. all of these
17: The ratio of angular velocities of hour hand and minute hand of a watch is
a.
b.
c.
d. none of these
18: A mass m is moving with constant acceleration parallel to x-axis, its angular momentum w.r.t. origin will
a. remains constant
b. decrease
c. increase
d. be zero
19: Which one of the following is not unit of angular momentum
a. joule
b. watt
c. Newton
d. none of these
20: The moment of momentum is called
a. impulse
b. angular momentum
c. couple
d. torque
21: The ratio of gravitational mass to inertial mass is
a.
b.
c.
d.
22: Where does a body weigh maximum
a. at equator
b. at moon
c. at poles
d. None of these
23: Newton’s law of gravitation is valid
a. for all bodies
b. only for charged bodies
c. Only for heavenly bodies
d. only for small bodies
24: The weight of a body at center of earth will be
a.
b.
c. Zero
d. infinity
25: The gravitational effect of which of following cause tidal waves in the sea
a. Sun
b. earth
c. moon
d. all of these
26: The gravitational mass of a body is M. The inertial mass of same body on moon will be
a.
b. zero
c.
d.
27: A stone is dropped freely into a tunnel along diameter of earth, when it reaches the center of earth then it possesses only
a. weight
b. mass
c. kinetic energy
d. both b and c
28: The escape speed from a planet of mass m and radius r is
a.
b.
c.
d. none of these
29: At what angle with the horizontal should a projectile be fired with escape velocity to enable it from gravitational pull of earth
a. at any angle
b. less than
c. greater than
d.
30: Gravitational forces are
a. strong
b. short strong
c. weak
d. non-central
31: Angle between viscous force and direction of flow of liquid is
a.
b.
c.
d. None of these
32: A needle keeps floating on water surface. The reason for this is
a. size of needle
b. surface tension
c. cohesive force
d. adhesive force
33: The ratio of normal stress to volumetric strain is called
a. Bulk modulus
b. Young modulus
c. modulus of rigidity
d. all of these
34: The cause of viscosity of liquid is
a. diffusion
b. cohesive force
c. adhesive force
d. gravitational force
35: Bernoulli’s equation is based on conservation of
a. mass
b. energy
c. momentum
d. all of these
36: When a soap bubble is charged, then it
a. expands
b. contracts
c. remains unchanged
d. becomes erroneous
37: The unit of coefficient of viscosity is S.I. system is
a.
b.
c.
d.
38: Surface tension can be expressed in
a.
b.
c.
d. none of these
39: The surface tension of cold water as compared to that of hot water is
a. less
b. more
c. equal
d. cannot be predicted
40: A weightless rubber balloon has 100 g of water in it. Its weight in water will be
a. 100 g
b. 200 g
c. 50 g
d. zero
41: If speed of light were infinity instead of c, then moving mass will become
a.
b.
c.
d. zero
42: A frame of reference which remains at rest or moves with uniform velocity is called
a. uniform frame
b. variable frame
c. inertial frame
d. non-inertial frame
43: According to special theory of relativity, the law of physics are same in all
a. inertial frames
b. non-inertial frames
c. accelerated frames
d. all of these
44: Two photons recede from each other. Their relative velocity will be
a.
b.
c. zero
d.
45: Decay of µ-meson supports
a. length contraction
b. time dilation
c. relativity of mass
d. simultaneity
46: The postulate of special theory of relativity are applicable to
a. stationary frame
b. accelerated frame
c. inertial frame
d. all of above
47: The statement “all inertial frames are equivalent” is called principal of
a. inertia
b. relative motion
c. equivalence
d. correspondence
48: velocity of light in free space
a.
b.
c.
d. none of these
49: which of the following relation is valid in special theory of relativity
a.
b.
c.
d.
50: Special theory of relativity deals with the events in the frames of reference which moves with constant
a. velocity
b. acceleration
c. time interval
d. momentum
