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

SI unit of frequency is

Question # 2

Time period of a simple pendulum depends upon the

Question # 3

The time required to complete on vibration is called

Question # 4

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 5

transverse wave motion is possible in:

Question # 6

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 7

The restoring force always directed towards the

Question # 8

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 9

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

Question # 10

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 11

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

Question # 12

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 13

Which one is not produced by sound waves in air?

Question # 14

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 15

Mechanical waves on the surface of a liquid are

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Such oscillations in which the amplitude decreases steadily with time, are called
A. resonance
B. force oscillations
C. large oscillations
D. damped oscillations
2 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
3 The characteristic of a body executing S.H.M is that its acceleration is
A. inversely proportional to displacement
B. directly proportional to displacement
C. independent of displacement
D. equal to zero
4 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
5 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
6 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
7 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
8 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
9 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
10 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
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall

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