ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

When the bob of simple pendulum is at mean position, its K.E will be

Question # 2

Fidelity refers to

Question # 3

The waves produced in a microwave oven have frequency

Question # 4

The total energy of spring mass system is

Question # 5

The bob of a simple pendulum is suspended by

Question # 6

The characteristic of a body executing S.H.M is that its acceleration is

Question # 7

The expression for restoring force is

Question # 8

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 9

The speed of sound in a medium depends on

Question # 10

The waves moving from a sitar to a listener in air are

Question # 11

Which one is not produced by sound waves in air?

Question # 12

Of the following, the option ______ reminds of longitudinal waves.

Question # 13

The frequency of free vibrations is known as

Question # 14

The waves which propagate by the collision of material particles are known as

Question # 15

A simple pendulum consists of a

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
2 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
3 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
4 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
5 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
6 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
7 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
8 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
9 In case of mechanical waves, we study the motion of
A. a single particle
B. collection of particle
C. any one of them
D. none of them
10 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity

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