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 two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 2

For production of beats the two sources must have

Question # 3

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 4

The expression of Hook's law is

Question # 5

In transverse waves, the individual particles of the medium move:

Question # 6

The weight 'mg' of the bob is resolved into

Question # 7

Which one of the following wave motions is transverse:

Question # 8

A heavily damped system has a fairly

Question # 9

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 10

The time period of pendulums of different lengths would be

Question # 11

Acceleration of the mass at any instant is given by

Question # 12

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 13

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 14

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

Question # 15

A traveling wave has a shape of:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
2 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
3 Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?
A. 103
B. 106
C. 109
D. 1012
4 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
5 Longitudinal waves are also called:
A. Congressional waves
B. Transverse waves
C. Radio waves
D. None of them
6 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
7 The velocity of sound in air not effected by changes in
A. Moisture contents in air
B. Temperature of air
C. The atmosphere pressure
D. The composition of air
8 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
9 When two waves with same frequency and constant phase difference phase difference interfere
A. There is a gain of energy
B. There is a loss of energy
C. The energy is redistributed and the distribution changes with time
D. The energy is redistributed and the distribution remains constant with time
10 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them

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