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 process in which energy is dissipated from the oscillating system is known as

Question # 2

Which of the following is not mechanical wave?

Question # 3

SI unit of wave length is:

Question # 4

A heavily damped system has a fairly

Question # 5

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 6

When two waves with same frequency and constant phase difference phase difference interfere

Question # 7

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 8

Which one is not produced by sound waves in air?

Question # 9

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

Question # 10

In stationary waves

Question # 11

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

Question # 12

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

Question # 13

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 14

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 15

A simple pendulum consists of a

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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 example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
3 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion
4 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
5 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
6 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
7 When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be
A. W=Kxo
B. W=1/2Kxo
C. W=1/2Kx2o
D. W=4Kxo
8 Which waves are used in sonography?
A. Microwaves
B. Infra red waved
C. Sound waves
D. Ultrasonic waves
9 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
10 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them

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