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Online Tests
Physics ECAT Pre Engineering Chapter 8 Waves Online Test MCQs With Answers
Question # 1
If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
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diffraction
beat
interference
resonance
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Question # 2
One complete round trip of the body about its mean position is called
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displacement
vibration
a complete motion
an acceleration
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Question # 3
transverse wave motion is possible in:
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Air
A mixture of NH
3
and O
2
Strings
All of these
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Question # 4
The process in which energy is dissipated from the oscillating system is known as
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resonance
interference
diffraction
damping
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Question # 5
Longitudinal waves are also called:
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Congressional waves
Transverse waves
Radio waves
None of them
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Question # 6
The square of 0.4 is:
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Greater than 0.4
Smaller than 0.4
Equal to 0.4
None of them
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Question # 7
In case of mechanical waves, we study the motion of
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a single particle
collection of particle
any one of them
none of them
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Question # 8
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
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rotatory motion
motion under gravity
angular motion
simple harmonic motion
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Question # 9
The distance covered by the wave during one period is called its:
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Wave number
Frequency
Wavelength
Time period
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Question # 10
Transverse waves can be set up:
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Solids
Liquids
Gases
All of them
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Question # 11
The loudness and pitch of a sound note depends on
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Intensity and velocity
Frequency and velocity
Intensity and frequency
Frequency and number of harmonic
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Question # 12
The number of vibrating body at any instant from its equilibrium position is called
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displacement
frequency
amplitude
time period
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Question # 13
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 # 14
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
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longitudinal waves
transverse waves
non-mechanical waves
none of them
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Question # 15
It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be
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60
°
90
°
120
°
180
°
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Question # 16
SI unit of wave length is:
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Kilometer
Metre
Centimetre
Hertz
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Question # 17
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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