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

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

Question # 2

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 3

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 4

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 5

The distance covered by the wave during one period is called its:

Question # 6

If we increase the length of a simple pendulum four times, its time period will become

Question # 7

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

Question # 8

When a wave is travels from one place to another, it transfers:

Question # 9

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 10

A physical system under going forced vibrations is known as

Question # 11

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

Question # 12

Which one of the following could be the frequency of ultraviolet radiation?

Question # 13

The bob of a simple pendulum is suspended by

Question # 14

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 15

Laplace formula is derived from

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 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
2 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
3 Angular frequency 'w' is basically a characteristics of
A. linear motion
B. circular motion
C. both of them
D. none of them
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 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
6 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°
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 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
9 Crests and troughs are formed in:
A. Longitudinal waves
B. Transverse waves
C. Both of these
D. None of these
10 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz

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