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

Mechanical waves on the surface of a liquid are

Question # 2

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 3

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 4

Crests and troughs are formed in:

Question # 5

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

Question # 6

The loudness and pitch of a sound note depends on

Question # 7

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

Question # 8

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

Question # 9

The maximum displacement of a body on either side of its equilibrium position is called

Question # 10

Which one is not produced by sound waves in air?

Question # 11

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 12

In solids, only following type/s of wave can travel:

Question # 13

The restoring force always directed towards the

Question # 14

For transmission of both transverse and longitudinal waves, we can use:

Question # 15

Acceleration of the mass at any instant is given by

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Smaller the damping, the resonance will be
A. more flat
B. more sharp
C. both of them
D. none of them
2 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
3 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
4 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
5 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
6 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
7 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
8 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
9 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
10 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0

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