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

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 2

Which of the following changes at an antinode in a stationary wave?

Question # 3

The speed of sound in a medium depends on

Question # 4

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 5

Shock absorber of the car is an example of

Question # 6

When sound waves travel from air to water which of these remains constant?

Question # 7

Smaller the damping, greater will be the

Question # 8

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

Question # 9

Mechanical waves on the surface of a liquid are

Question # 10

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 11

A heavily damped system has a fairly

Question # 12

Crests and troughs are formed in:

Question # 13

Energy is not carried by

Question # 14

Longitudinal waves are also called:

Question # 15

The expression for restoring force is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
2 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
3 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
4 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
5 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
6 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
7 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
8 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
9 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
10 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

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