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

The wave motion set up in any medium depends upon:

Question # 2

When a wave is travels from one place to another, it transfers:

Question # 3

The velocity of sound at same temperature is maximum in

Question # 4

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

Question # 5

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Question # 6

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

Question # 7

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

Question # 8

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?

Question # 9

If a wave can be polarized, it must be

Question # 10

transverse wave motion is possible in:

Question # 11

The frequency of free vibrations is known as

Question # 12

Example of progressive wave is

Question # 13

Waves transport energy

Question # 14

The restoring force always directed towards the

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
2 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
3 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time
4 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
5 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
6 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
7 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
8 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
9 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
10 An object undergoes S.H.M has maximum acceleration when its displacement form the means position
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value

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