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Online Tests
ECAT Physics Chapter 8 Waves Online Test MCQs With Answers
Question # 1
The distance covered by the wave during one period is called its:
Choose an answer
Wave number
Frequency
Wavelength
Time period
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Question # 2
The expression for restoring force is
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F=ma
F=kx
F= -kx
Kx=ma
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Question # 3
The wave motion set up in any medium depends upon:
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Elasticity
Inertia
Density
All of these
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Question # 4
The force which opposes the applied force producing the displacement in the spring is called
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restoring force
periodic force
centripetal force
resistive force
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Question # 5
An object undergoes S.H.M has maximum acceleration when its displacement form the means position
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maximum
zero
half of the maximum value
one third of the maximum value
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Question # 6
Waves transport energy
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without transport energy
with matter
both of them
none of them
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Question # 7
It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice
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Has a definite pitch
Has a definite quality
Has a definite capacity
Can penetrate the wall
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Question # 8
Which of the following is not mechanical wave?
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Sound wave
Light wave
wave produced in spring
None of them
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Question # 9
The process in which energy is dissipated from the oscillating system is known as
Choose an answer
resonance
interference
diffraction
damping
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Question # 10
If the time period a simple pendulum is 2 s, its frequency would be
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2 Hz
1.5 Hz
1.0 Hz
0.5 Hz
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Question # 11
Which of the following changes at an antinode in a stationary wave?
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Density only
Pressure only
Both pressure and density
Neither pressure nor density
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Question # 12
In the same medium, velocity of the wave:
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Goes on increasing
Remains constant
Goes on decreasing
None of these
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Question # 13
The temperature at which the speed of sound becomes double as was at 27
°C is
Choose an answer
273
°C
0
°C
927
°C
1027
°C
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Question # 14
Smaller the damping, the resonance will be
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more flat
more sharp
both of them
none of them
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Question # 15
The velocity of sound is greatest in
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Water
Air
Vacuum
Metal
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Question # 16
The characteristic of a body executing S.H.M is that its acceleration is
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inversely proportional to displacement
directly proportional to displacement
independent of displacement
equal to zero
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