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

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 2

In the resonance condition, the amplitude of the oscillator becomes

Question # 3

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

Question # 4

Which one of the following is an example of resonance

Question # 5

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

Question # 6

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

Question # 7

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 # 8

Energy is not carried by

Question # 9

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 10

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

Question # 11

Which of the following is not mechanical wave?

Question # 12

The velocity of sound in air not effected by changes in

Question # 13

A traveling wave has a shape of:

Question # 14

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

Question # 15

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
2 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
3 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
4 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
5 The maximum displacement of a body on either side of its equilibrium position is called
A. frequency
B. amplitude
C. displacement
D. time period
6 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
7 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
8 Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of
A. very small energy
B. very large energy
C. frictional forces
D. acceleration due to gravity
9 The temperature at which the speed of sound becomes double as was at 27°C is
A. 273°C
B. 0°C
C. 927°C
D. 1027°C
10 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them

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