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

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

Question # 2

Mechanical waves on the surface of a liquid are

Question # 3

There is no net transfer of energy by particle of medium in

Question # 4

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

Question # 5

Which of the following changes at an antinode in a stationary wave?

Question # 6

The speed of sound in a medium depends on

Question # 7

The loudness and pitch of a sound note depends on

Question # 8

Crests and troughs are formed in:

Question # 9

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

Question # 10

Time period of simple pendulum is independent of

Question # 11

Shock absorber of the car is an example of

Question # 12

Smaller the damping, greater will be the

Question # 13

Energy is not carried by

Question # 14

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

Question # 15

Example of progressive wave is

Question # 16

The vibratory or oscillatory motion of a body is

Question # 17

In the resonance condition, the amplitude of the oscillator becomes

Question # 18

The distance covered by the wave during one period is called its:

Question # 19

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

Question # 20

Waves transport energy

Question # 21

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

Question # 22

SI unit of frequency is

Question # 23

Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?

Question # 24

The wave motion set up in any medium depends upon:

Question # 25

The characteristic of a body executing S.H.M is that its acceleration is

Question # 26

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 27

If F=0.04 N and X=4 cm then K=

Question # 28

Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of

Question # 29

The expression of Hook's law is

Question # 30

Which type of wave can be set up in solids

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
2 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
3 Two sources of sound are said to be coherent if
A. The produce sounds of equal intensity
B. They produce sounds of equal frequency
C. They produce sound waves vibrating with the same phase
D. They produce sound waves with zero or constant phase difference all instant of time
4 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
5 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
6 In transverse waves, the individual particles of the medium move:
A. In circles
B. Perpendicular to the direction of level
C. Parallel to the direction of level
D. None of these
7 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
8 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
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 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these

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