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

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 2

The principle of superposition states that

Question # 3

The velocity of sound at same temperature is maximum in

Question # 4

When a body is performing S.H.M., its acceleration is

Question # 5

In the same medium, velocity of the wave:

Question # 6

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 7

In stationary waves

Question # 8

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

Question # 9

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 # 10

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

Question # 11

In the resonance condition, the amplitude of the oscillator becomes

Question # 12

Which waves are used in sonography?

Question # 13

Waves transport energy

Question # 14

A weakly damped system has fairly

Question # 15

The time period of pendulums of different lengths would be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
3 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity
4 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
5 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them
6 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
7 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
8 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
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 frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency

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