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

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 2

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 3

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Question # 4

Waves transport energy

Question # 5

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 6

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

Question # 7

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 8

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

Question # 9

In the resonance condition, the amplitude of the oscillator becomes

Question # 10

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

Question # 11

Fluids can transmit:

Question # 12

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

Question # 13

Time period of a simple pendulum depends upon the

Question # 14

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 15

A simple pendulum consists of a

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
2 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
3 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
4 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°
5 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these
6 It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
A. 60°
B. 90°
C. 120°
D. 180°
7 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
8 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
9 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
10 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

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