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

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 # 2

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 3

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

Question # 4

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 5

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 6

Example of vibratory motion is

Question # 7

For transmission of both transverse and longitudinal waves, we can use:

Question # 8

The maximum displacement of a body on either side of its equilibrium position is called

Question # 9

The principle of superposition states that

Question # 10

Angular frequency 'w' is basically a characteristics of

Question # 11

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

Question # 12

The waves which propagate by the collision of material particles are known as

Question # 13

The expression for restoring force is

Question # 14

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

Question # 15

A wave, which transfer energy by moving away from the source of disturbance is called a

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Decibel is unit of
A. Intensity of light
B. x-ray radiation capacity
C. sound loudness
D. Energy of radiation
2 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
3 Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at
A. subsonic speed
B. sonic speed
C. super sonic speed
D. any one of them
4 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
5 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
6 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
7 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°
8 In stationary waves
A. Energy is uniformly distributed
B. Energy is minimum at nodes and maximum at antinodes
C. Energy is maximum at nodes and minimum at antidotes
D. Alternating maximum and minimum energy producing at nodes and antinodes
9 Fluids can transmit:
A. Transverse wave
B. Compressional wave
C. Both of them
D. None of them
10 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

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