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 one is not produced by sound waves in air?

Question # 2

When a body is performing S.H.M., its acceleration is

Question # 3

The principle of superposition states that

Question # 4

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

Question # 5

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

Question # 6

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 7

A heavily damped system has a fairly

Question # 8

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 9

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

Question # 10

The total energy of spring mass system is

Question # 11

SI unit of wave length is:

Question # 12

Shock absorber of the car is an example of

Question # 13

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

Question # 14

The instantaneous velocity of a body moving along a circle is directed

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
2 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
3 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
4 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
5 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
6 Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
A. Interference
B. Diffraction
C. Polarization
D. Refraction
7 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
8 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
9 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
10 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them

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