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

Time period of a simple pendulum depends upon the

Question # 2

The waves which propagate through the oscillations of material particles are known as:

Question # 3

Decibel is unit of

Question # 4

Which of the following does not exhibit S.H.M?

Question # 5

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

Question # 6

The velocity of sound in air depends upon

Question # 7

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 8

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

Question # 9

The waves moving from a sitar to a listener in air are

Question # 10

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 11

Smaller the damping, greater will be the

Question # 12

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 13

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 14

Waves transport energy

Question # 15

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
A. applied force
B. momentum
C. restoring force
D. none of them
2 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
3 Which of the following is an example of a S.H.M?
A. motion of a projectile
B. motion of a train along a circular path
C. motion of swing
D. electrons revolving sound the nucleus
4 Shock absorber of the car is an example of
A. resonance
B. forced oscillations
C. interference
D. damped oscillations
5 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°
6 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
7 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:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
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 bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
10 If the length of a simple pendulum is 0.25 m its time period would be
A. 1.0 s
B. 2.0 s
C. 3.0 s
D. 4.0 s

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