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

If the length of a simple pendulum is 0.25 m its time period would be

Question # 2

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

Question # 3

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

Question # 4

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 # 5

The wave motion set up in any medium depends upon:

Question # 6

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

Question # 7

The square of 0.4 is:

Question # 8

The distance covered by the wave in one second is:

Question # 9

The velocity of sound is greatest in

Question # 10

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

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

The principle of superposition states that

Question # 13

A physical system under going forced vibrations is known as

Question # 14

The waves produced in a microwave oven have frequency

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
2 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
3 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
4 There is no net transfer of energy by particle of medium in
A. Longitudinal wave
B. Transverse wave
C. Progressive wave
D. Stationary wave
5 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
6 Which one is not produced by sound waves in air?
A. Polarization
B. Diffraction
C. Refraction
D. Reflection
7 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
8 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
9 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
10 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these

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