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

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

Question # 2

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

Question # 3

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

Question # 4

The waves produced in a microwave oven have wavelength.

Question # 5

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 # 6

Example of progressive wave is

Question # 7

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 8

The total energy of spring mass system is

Question # 9

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

Question # 10

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 # 11

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

Question # 12

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

Question # 13

The speed of sound in a medium depends on

Question # 14

Example of vibratory motion is

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be
A. P.E=Kx2o
B. P.E= 1/2kxo
C. P.E=1/2Kx2o
D. P.E=Kx2o
2 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
3 In compressional wave,the layer of medium having reduced pressure is called:
A. Compression
B. Elasticity
C. Node
D. Rarefaction
4 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
5 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
6 Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator
A. greater than the frequency of applied force
B. equal to the frequency of applied force
C. less than the frequency of applied force
D. all of them
7 As the bob of the pendulum moves to and fro which of the force is experienced by the bob
A. its weight
B. tension in the string
C. viscous drag force by air
D. all of them
8 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
9 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
10 The distance covered by the wave in one second is:
A. Wave number
B. Wave length
C. Frequency
D. Wave speed

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