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

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 2

When temperature increase, the frequency of a tuning fork

Question # 3

The example of mechanical wave is

Question # 4

The wave motion set up in any medium depends upon:

Question # 5

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 6

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

When the bob of simple pendulum is at mean position, its K.E will be

Question # 11

Which of the following is an example of a S.H.M?

Question # 12

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 13

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 14

The bob of a simple pendulum is suspended by

Question # 15

Laplace formula is derived from

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
2 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
3 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
4 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
5 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
6 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
7 Which one is not produced by sound waves in air?
A. Polarization
B. Diffraction
C. Refraction
D. Reflection
8 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
9 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them
10 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them

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