ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 2

A body is executing free vibrations when it oscilates

Question # 3

Time period of simple pendulum is independent of

Question # 4

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 5

The vibratory or oscillatory motion of a body is

Question # 6

The process in which energy is dissipated from the oscillating system is known as

Question # 7

The wave motion set up in any medium depends upon:

Question # 8

If the length of second pendulum becomes four times then its time period will become

Question # 9

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

Question # 10

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

Question # 11

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 12

A simple pendulum consists of a

Question # 13

Ultra-violet rays differ from X-rays in that they

Question # 14

The restoring force always directed towards the

Question # 15

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 16

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 17

The number of vibrating body at any instant from its equilibrium position is called

Question # 18

Energy is not carried by

Question # 19

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 20

Which of the following changes at an antinode in a stationary wave?

Question # 21

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Question # 22

A second's pendulum is a pendulum whose time period is

Question # 23

The velocity of sound in air not effected by changes in

Question # 24

For production of beats the two sources must have

Question # 25

Fidelity refers to

Question # 26

The speed of sound in a medium depends on

Question # 27

The example of mechanical wave is

Question # 28

For a body executing S. H. M, its

Question # 29

In the resonance condition, the amplitude of the oscillator becomes

Question # 30

The waves produced in a microwave oven have wavelength.

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
2 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
3 The characteristic of a body executing S.H.M is that its acceleration is
A. inversely proportional to displacement
B. directly proportional to displacement
C. independent of displacement
D. equal to zero
4 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
5 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
6 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
7 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
8 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
9 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1
10 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them

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