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 type of wave can be set up in solids

Question # 2

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

Question # 3

In case of mechanical waves, we study the motion of

Question # 4

The distance covered by the wave during one period is called its:

Question # 5

The time required to complete on vibration is called

Question # 6

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 7

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 # 8

The number of vibrating body at any instant from its equilibrium position is called

Question # 9

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

Question # 10

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 11

A wave, which transfer energy by moving away from the source of disturbance is called a

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

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

Question # 14

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
2 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
3 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them
4 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
5 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
6 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
7 If a wave can be polarized, it must be
A. An electromagnetic wave
B. A longitudinal wave
C. A progressive wave
D. A transverse wave
8 The weight 'mg' of the bob is resolved into
A. one component
B. two components
C. three components
D. four components
9 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
10 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times

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