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

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

Question # 2

SI unit of wave length is:

Question # 3

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

Question # 4

Of the following, the option ______ reminds of longitudinal waves.

Question # 5

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

Question # 6

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

Question # 7

The restoring force always directed towards the

Question # 8

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 9

A heavily damped system has a fairly

Question # 10

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

Question # 11

Longitudinal waves are also called:

Question # 12

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

Question # 13

Velocity of sound in vacuum (in m/s) is

Question # 14

Which of the following is not mechanical wave?

Question # 15

Si units of time period is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
2 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
3 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:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
4 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
5 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
6 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
7 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
8 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
9 In the formula for finding the speed of waves in the spring, unit of m in SIn units is:
A. kg
B. kg-meter
C. kg/meter
D. Meter/kg
10 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

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