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Online Tests
ECAT Physics Chapter 8 Waves Online Test MCQs With Answers
Question # 1
The wave form of S.H.M will be
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square wave
sine wave
rectified wave
saw-tooth wave
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Question # 2
When temperature increase, the frequency of a tuning fork
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Increases
Decreases
Remains same
Increase or decreases depending on the material
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Question # 3
Time period of a simple pendulum depends upon the
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length of the pendulum
acceleration due to gravity
none of them
both of them
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Question # 4
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 # 5
With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
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Energy, momentum and mass
Energy
Energy and mass
Energy and linear momentum
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Question # 6
The distance covered by the wave in one second is:
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Wave number
Wave length
Frequency
Wave speed
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Question # 7
The natural frequency of a pendulum which is vibrating freely, depends upon its
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mass
length
material
all of them
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Question # 8
The restoring force always directed towards the
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extreme position
mean position
both of them
none of them
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Question # 9
To hear a clear echo, the reflecting surface must be at a minimum distance of
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10 m
16.5 m
33 m
66 m
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Question # 10
Ultra-violet rays differ from X-rays in that they
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Cannot be diffracted
Cannot be polarized
Have a lower frequency
Are deviated when they pass through a magnetic field
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Question # 11
The waves which propagate by the collision of material particles are known as
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e.m. waves
mechanical waves
light waves
microwaves
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Question # 12
A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:
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Longitudinal wave
Transverse wave
No vibration at all
None of them
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Question # 13
The waves which propagate through the oscillations of material particles are known as:
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Mechanical waves
Electromagnetic waves
Any of them
None of them
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Question # 14
In the resonance condition, the amplitude of the oscillator becomes
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very large
very small
zero
any one of them
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Question # 15
Which one of the following could be the frequency of ultraviolet radiation?
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1.0 x 10
6
Hz
1.0 x 10
9
Hz
1.0 x 10
12
Hz
1.0 x 10
15
Hz
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Question # 16
The resonance will be sharp, if the amplitude decreases rapidly at a frequency
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equal to the resonant frequency
slight different from the resonant frequency
greatly different from the resonant frequency
any one of them
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Question # 17
At 'resonance' the transfer of energy from deriving source to the oscillator is
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maximum
minimum
zero
none of them
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