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

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 2

If the mass of the simple pendulum becomes double, its time period

Question # 3

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 4

When a body moves to and fro motion, this type of motion is called

Question # 5

When temperature increase, the frequency of a tuning fork

Question # 6

Which of the following is the longitudinal waves?

Question # 7

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

Question # 8

The waves moving from a sitar to a listener in air are

Question # 9

The time required to complete on vibration is called

Question # 10

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

Question # 11

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

Question # 12

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 # 13

Decibel is unit of

Question # 14

The loudness and pitch of a sound note depends on

Question # 15

Two sources of sound are said to be coherent if

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
2 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
3 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
4 Which of the following does not exhibit S.H.M?
A. a plucked violin string
B. a mass attached to a spring
C. a train shunting between two terminals
D. a simple pendulum
5 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
6 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
7 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them
8 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
9 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
10 In a resonance situation the amplitude of the motion may become extra ordinarily large, if
A. the driving force is large
B. the driving force is zero
C. the driving force may be feeble
D. all of them

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