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

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

Question # 2

transverse wave motion is possible in:

Question # 3

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 4

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 # 5

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

Question # 6

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

Question # 7

Smaller the damping, the resonance will be

Question # 8

In the resonance condition, the amplitude of the oscillator becomes

Question # 9

Velocity of sound in vacuum (in m/s) is

Question # 10

Transverse waves can be set up:

Question # 11

In solids, only following type/s of wave can travel:

Question # 12

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 13

Through which character we can distinguish the light waves from sound waves

Question # 14

Which type of wave can be set up in solids

Question # 15

If a wave can be polarized, it must be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
2 SI unit of frequency is
A. second
B. hertz
C. revolution
D. vibrations/sec
3 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
4 The frequency of free vibrations is known as
A. free frequency
B. forced frequency
C. natural frequency
D. un-natural frequency
5 As the bob of the pendulum moves to and fro which of the force is experienced by the bob
A. its weight
B. tension in the string
C. viscous drag force by air
D. all of them
6 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
7 The waves in which the particles of the medium have displacement along the direction of propagation of waves are called
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
8 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
9 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
10 Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1

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