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 body is executing free vibrations when it oscilates

Question # 2

Through which character we can distinguish the light waves from sound waves

Question # 3

In compressional wave,the layer of medium having reduced pressure is called:

Question # 4

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 5

Example of progressive wave is

Question # 6

Smaller the damping, greater will be the

Question # 7

Longitudinal waves are also called:

Question # 8

The expression for restoring force is

Question # 9

Acceleration of the mass at any instant is given by

Question # 10

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 # 11

If we increase the length of a simple pendulum four times, its time period will become

Question # 12

transverse wave motion is possible in:

Question # 13

In solids, only following type/s of wave can travel:

Question # 14

Two sources of sound are said to be coherent if

Question # 15

Which of the following is an example of a S.H.M?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
2 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
3 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
4 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
5 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
6 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
7 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
8 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance
9 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
10 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

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