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

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

Question # 2

In the same medium, velocity of the wave:

Question # 3

Which waves are used in sonography?

Question # 4

The velocity of sound in air depends upon

Question # 5

The time required to complete on vibration is called

Question # 6

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 7

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 8

In solids, only following type/s of wave can travel:

Question # 9

A heavily damped system has a fairly

Question # 10

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

Question # 11

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

Question # 12

In stationary waves

Question # 13

In transverse waves, the individual particles of the medium move:

Question # 14

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 # 15

If the mass of the simple pendulum becomes double, its time period

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
2 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
3 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
4 The waves in which the particles of the medium have displacement along the direction of propagation of waves are called
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them
5 Which one of the following is an example of resonance
A. swing
B. tuning a radio
C. microwave oven
D. all of them
6 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
7 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?
A. 103
B. 106
C. 109
D. 1012
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 To hear a clear echo, the reflecting surface must be at a minimum distance of
A. 10 m
B. 16.5 m
C. 33 m
D. 66 m
10 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them

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