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

In case of mechanical waves, we study the motion of

Question # 2

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

Question # 3

Which one of the following is an example of resonance

Question # 4

A swing has

Question # 5

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 6

If the time period a simple pendulum is 2 s, its frequency would be

Question # 7

The waves which propagate through the oscillations of material particles are known as:

Question # 8

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

Question # 9

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 10

When a wave is travels from one place to another, it transfers:

Question # 11

The velocity of sound is greatest in

Question # 12

The time period of pendulums of different lengths would be

Question # 13

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

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

Waves transport energy

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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 bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
3 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them
4 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
5 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
6 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
7 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°
8 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
9 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
10 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field

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