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

The waves which propagate by the collision of material particles are known as

Question # 2

The wave motion set up in any medium depends upon:

Question # 3

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

Question # 4

SI unit of frequency is

Question # 5

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 6

The waves produced in a microwave oven have frequency

Question # 7

Laplace formula is derived from

Question # 8

The velocity of sound in air not effected by changes in

Question # 9

Which waves are used in sonography?

Question # 10

The speed of sound in a medium depends on

Question # 11

The example of mechanical wave is

Question # 12

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 # 13

In stationary waves

Question # 14

For transmission of both transverse and longitudinal waves, we can use:

Question # 15

A second's pendulum is a pendulum whose time period is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice
A. Has a definite pitch
B. Has a definite quality
C. Has a definite capacity
D. Can penetrate the wall
2 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
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
3 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
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 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
6 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
7 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
8 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
9 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
10 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave

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