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

When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be

Question # 2

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 3

Time period of a simple pendulum depends upon the

Question # 4

Which type of wave can be set up in solids

Question # 5

Sound waves in air always

Question # 6

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

Question # 7

Ultra-violet rays differ from X-rays in that they

Question # 8

The phase determines the

Question # 9

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

Question # 10

A simple pendulum consists of a

Question # 11

Shock absorber of the car is an example of

Question # 12

The time period of pendulums of different lengths would be

Question # 13

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

Question # 14

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 15

In the same medium, velocity of the wave:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The velocity of sound in air depends upon
A. Density and elasticity of gas
B. Pressure
C. Wavelength
D. Amplitude and frequency of sound
2 The portion of the water above its mean level forms a:
A. Crest
B. Trough
C. Both A and B
D. None of these
3 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
4 The waves which propagate by the collision of material particles are known as
A. e.m. waves
B. mechanical waves
C. light waves
D. microwaves
5 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
6 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
7 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
8 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
9 The restoring force always directed towards the
A. extreme position
B. mean position
C. both of them
D. none of them
10 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line

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