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

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 2

Fidelity refers to

Question # 3

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

Question # 4

The speed of sound in a medium depends on

Question # 5

The time required to complete on vibration is called

Question # 6

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

Question # 7

Which of the following is not mechanical wave?

Question # 8

The force which opposes the applied force producing the displacement in the spring is called

Question # 9

Which of the following is the longitudinal waves?

Question # 10

If a freely oscillating system is subjected to an external force, then

Question # 11

Smaller the damping, the resonance will be

Question # 12

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

Question # 13

Smaller the damping, greater will be the

Question # 14

If the mass of the simple pendulum becomes double, its time period

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
2 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
3 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
4 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
5 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
6 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
7 There is no net transfer of energy by particle of medium in
A. Longitudinal wave
B. Transverse wave
C. Progressive wave
D. Stationary wave
8 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them
9 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
10 Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1

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