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

A swing has

Question # 2

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 3

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

Question # 4

Which one of the following elasticizes is possessed by fluids:

Question # 5

When sound waves travel from air to water which of these remains constant?

Question # 6

SI unit of frequency is

Question # 7

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Question # 8

In solids, only following type/s of wave can travel:

Question # 9

transverse wave motion is possible in:

Question # 10

Fluids can transmit:

Question # 11

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

Question # 12

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 13

Which one of the following could be the frequency of ultraviolet radiation?

Question # 14

A wave, which transfer energy by moving away from the source of disturbance is called a

Question # 15

A body is executing free vibrations when it oscilates

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
2 The instantaneous velocity of a body moving along a circle is directed
A. along the radius
B. along the tangent
C. away from the circle
D. none of them
3 In solids, only following type/s of wave can travel:
A. Transverse
B. Longitudinal
C. Both A and B
D. None of them
4 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
5 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
6 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
7 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
8 Velocity of sound in vacuum (in m/s) is
A. 330
B. 1000
C. 156
D. 0
9 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
10 Which type of wave can be set up in solids
A. longitudinal waves
B. transverse waves
C. both of them
D. none of them

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