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

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 2

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 3

One complete round trip of the body about its mean position is called

Question # 4

The square of 0.4 is:

Question # 5

The example of mechanical wave is

Question # 6

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 # 7

A body is executing free vibrations when it oscilates

Question # 8

While describing the motion of a simple pendulum, the frictional effects are

Question # 9

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 10

Two sources of sound are said to be coherent if

Question # 11

Transverse waves can be set up:

Question # 12

Which one is not produced by sound waves in air?

Question # 13

For a body executing S. H. M, its

Question # 14

Fidelity refers to

Question # 15

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
A. Rope
B. Coil of spring
C. Water
D. All of them
2 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
3 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
4 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
5 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
6 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
7 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
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 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
10 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these

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