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

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

Question # 2

For transmission of both transverse and longitudinal waves, we can use:

Question # 3

In compressional wave,the layer of medium having reduced pressure is called:

Question # 4

The example of mechanical wave is

Question # 5

A physical system under going forced vibrations is known as

Question # 6

If a wave can be polarized, it must be

Question # 7

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 8

Fidelity refers to

Question # 9

The time required to complete on vibration is called

Question # 10

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

Question # 11

The speed of sound in a medium depends on

Question # 12

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

Question # 13

The velocity of sound is greatest in

Question # 14

A heavily damped system has a fairly

Question # 15

When the bob of simple pendulum is at extreme position, its K.E. will be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
2 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
3 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
4 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
5 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
6 When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be
A. P.E=Kx2o
B. P.E= 1/2kxo
C. P.E=1/2Kx2o
D. P.E=Kx2o
7 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
8 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
9 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
10 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction

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