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Physics ECAT Pre Engineering Chapter 8 Waves Online Test MCQs With Answers
Question # 1
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
Choose an answer
longitudinal waves
transverse waves
non-mechanical waves
none of them
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Question # 2
If F=0.04 N and X=4 cm then K=
Choose an answer
1 Nm
-1
2 Nm
-1
3 Nm
-1
4 Nm
-1
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Question # 3
The speed of sound in a medium depends on
Choose an answer
The elastic property but not on the inertia property
The inertia property but not on the elastic property
The elastic property as well as the inertia property
Neither the elastic property nor the inertia property
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Question # 4
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 # 5
When a mass 'm' is pulled slowly, the spring stretches by an amount x
o
, then the work done will be
Choose an answer
W=Kx
o
W=1/2Kx
o
W=1/2Kx
2
o
W=4Kx
o
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Question # 6
The frequency of free vibrations is known as
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free frequency
forced frequency
natural frequency
un-natural frequency
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Question # 7
The weight 'mg' of the bob is resolved into
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one component
two components
three components
four components
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Question # 8
For production of beats the two sources must have
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Different frequencies and same amplitude
Different frequencies
Different frequencies, same amplitude and same phase
Different frequencies and same phase
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Question # 9
Crests and troughs are formed in:
Choose an answer
Longitudinal waves
Transverse waves
Both of these
None of these
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Question # 10
Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:
Choose an answer
Rope
Coil of spring
Water
All of them
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Question # 11
Which type of wave can be set up in solids
Choose an answer
longitudinal waves
transverse waves
both of them
none of them
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Question # 12
A physical system under going forced vibrations is known as
Choose an answer
Simple harmonic oscillator
Compound harmonic oscillator
Physical harmonic oscillator
driven harmonic oscillator
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Question # 13
A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is
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2 m
1 m
0.5 m
4 m
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Question # 14
When a body is performing S.H.M., its acceleration is
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inversely proportional to the displacement
directly proportional to the applied force
directly proportional to the amplitude
directly proportional to the displacement but in opposite direction
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Question # 15
A body is executing free vibrations when it oscilates
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with the interference of an external force
without the interference of an external force
with the interference of an internal force
none of them
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Question # 16
Which of the following medium/media can transmit both transverse and longitudinal waves:
Choose an answer
Solids
Liquids
Gases
All of them
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