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

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

Question # 2

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 3

For a body executing S. H. M, its

Question # 4

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 5

A heavily damped system has a fairly

Question # 6

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 7

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

Question # 8

The velocity of sound in air depends upon

Question # 9

Which one of the following is an example of resonance

Question # 10

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 11

The distance covered by the wave in one second is:

Question # 12

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 # 13

Which of the following does not exhibit S.H.M?

Question # 14

The square of 0.4 is:

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 the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
2 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
3 A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is
A. 2 m
B. 1 m
C. 0.5 m
D. 4 m
4 In the resonance condition, the amplitude of the oscillator becomes
A. very large
B. very small
C. zero
D. any one of them
5 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
6 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
7 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
8 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none of them
9 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
10 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms

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