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 a body moves to and fro motion, this type of motion is called

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

The wave motion set up in any medium depends upon:

Question # 6

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 7

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 8

Which of the following is the longitudinal waves?

Question # 9

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

Question # 10

Mechanical waves on the surface of a liquid are

Question # 11

Time period of a simple pendulum depends upon the

Question # 12

The weight 'mg' of the bob is resolved into

Question # 13

In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is

Question # 14

Which type of wave can be set up in solids

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them
2 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
3 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
4 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
5 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
6 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
7 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
8 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
9 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
10 The velocity of sound in air depends upon
A. Density and elasticity of gas
B. Pressure
C. Wavelength
D. Amplitude and frequency of sound

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