Motion MCQs (Multiple Choice Questions)

Mark the most appropriate answer.

I.      Rate of change of displacement is called

(a) Speed

(c) Acceleration

(b) Velocity

(d) None of the above

 

2.      The external unbalance force required to accelerate a body is

proportional to the product of the mass of the body and the acceleration produced is called

(a) First law of motion                             (b) Law of inertia

(c) Second law of motion                         (d) Third law of motion

3.       The characteristic of weight is

(a)        A vector quantity

(b)        Not fixed property

(c)        Depend upon the location as well as the motion of framework

(d)        All a the above

4.      If the velocity of a body does not increase by equal amounts in

equal intervals of time it is said to have

(a) Uniform acceleration                          (b) Variable acceleration

(c) Average acceleration                         (d) Instantaneous acceleration

5. Neutron can be slowed down lithe stationary targets were

(a) Protons                                              (b) Electrons

(c) Photons                                              (d) x – rays

The substances used as moderators always consist of

(a) Lighter atoms                                     (b) Heavier atoms

(c) Atoms of comparable masses (d) None of the above

7.       The unit of linear impulse is the same as that of

(a) Force                                                 (b) Momentum

(c) Energy                                               (d) None of the above

If jt is the co-efficient of friction and 0 is the angle of friction,

then co-efficient of friction is equal to

(a) sin 0                                   (b) cosec

(c) cos 0                                  (d) tan

9.      A cricket ball is hit so that it travels straight up in air and it

acquires 3 seconds to reach the maximum height. Its initial velocity is

(a) 10 ms-‘                               (b) 15 ms-I

(c) 29.4 ms-                              (d) 12.2 ms-1

10. Temperature changes when two balls collide. Which one of the following is conserved ?

(a) Velocity                              (b) Kinetic energy

(c) Both olthem                         (d) Momentum

Answers 1 b

2  c

3   d

4   b

5  a

6    c

7   b

8  d

9  c

10  d

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