ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

In case of mechanical waves, we study the motion of

Question # 2

A traveling wave has a shape of:

Question # 3

Which one of the following elasticizes is possessed by fluids:

Question # 4

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 5

Crests and troughs are formed in:

Question # 6

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

Question # 7

Which one of the following is an example of resonance

Question # 8

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

Question # 9

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

Question # 10

Example of progressive wave is

Question # 11

In the resonance condition, the amplitude of the oscillator becomes

Question # 12

The distance covered by the wave in one second is:

Question # 13

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

Question # 14

SI unit of wave length is:

Question # 15

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

Question # 16

If the length of a simple pendulum is 0.25 m its time period would be

Question # 17

If the length of second pendulum becomes four times then its time period will become

Question # 18

For a body executing S. H. M, its

Question # 19

If the mass of the simple pendulum becomes double, its time period

Question # 20

Waves transport energy

Question # 21

A body is executing free vibrations when it oscilates

Question # 22

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

Question # 23

Smaller the damping, greater will be the

Question # 24

If a wave can be polarized, it must be

Question # 25

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

Question # 26

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 27

transverse wave motion is possible in:

Question # 28

SI unit of frequency is

Question # 29

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 # 30

When an oscillatory motion repeats itself, then this type of motion is called

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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 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
3 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
4 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
5 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
6 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them
7 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
8 The vibrations of factory floor caused by the running of heavy machinery is an example of
A. free vibration
B. natural vibrations
C. forced vibrations
D. all of them
9 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them
10 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic

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