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

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

Question # 2

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

Question # 3

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 # 4

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 # 5

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

Question # 6

Smaller the damping, the resonance will be

Question # 7

When a body moves to and fro motion, this type of motion is called

Question # 8

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

Question # 9

If the time period a simple pendulum is 2 s, its frequency would be

Question # 10

While describing the motion of a simple pendulum, the frictional effects are

Question # 11

Transverse waves can be set up:

Question # 12

If a wave can be polarized, it must be

Question # 13

The principle of superposition states that

Question # 14

Acceleration of the mass at any instant is given by

Question # 15

Si units of time period is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
2 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
3 Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
4 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
5 Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
A. waves
B. beat
C. interference
D. resonance
6 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
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 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
9 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
10 While describing the motion of a simple pendulum, the frictional effects are
A. taken into account
B. completely ignored
C. partially ignored
D. none of them

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