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

The wave motion set up in any medium depends upon:

Question # 2

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 3

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 4

Crests and troughs are formed in:

Question # 5

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 6

Longitudinal waves are also called:

Question # 7

The principle of superposition states that

Question # 8

The velocity of sound in air not effected by changes in

Question # 9

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

Question # 10

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

Question # 11

For a body executing S. H. M, its

Question # 12

A weakly damped system has fairly

Question # 13

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:

Question # 14

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 15

While describing the motion of a simple pendulum, the frictional effects are

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
2 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
3 The velocity of sound in air depends upon
A. Density and elasticity of gas
B. Pressure
C. Wavelength
D. Amplitude and frequency of sound
4 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
5 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
6 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
7 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
8 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
9 A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is
A. 2 m
B. 1 m
C. 0.5 m
D. 4 m
10 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

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