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Online Tests
Physics ECAT Pre Engineering Chapter 8 Waves Online Test MCQs With Answers
Question # 1
As the bob of the pendulum moves to and fro which of the force is experienced by the bob
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its weight
tension in the string
viscous drag force by air
all of them
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Question # 2
Two sound waves of slightly different frequencies propagating in the same direction produce beats due to
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Interference
Diffraction
Polarization
Refraction
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Question # 3
Which of the following is the longitudinal waves?
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Sound waves
Waves on plucked string
Water waves
Light waves
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Question # 4
The example of mechanical wave is
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waves in ropes
waves on water surface
waves in air
all of them
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Question # 5
A heavily damped system has a fairly
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sharp resonance curve
flat resonance curve
both of them
none of them
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Question # 6
While describing the motion of a simple pendulum, the frictional effects are
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taken into account
completely ignored
partially ignored
none of them
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Question # 7
Which one of the following wave motions is transverse:
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Wave motion produced in water when a piece of stone is thrown into it
Pulling of weight hanging vertically with a spiral spring
Both of these
None of these
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Question # 8
The maximum displacement of a body on either side of its equilibrium position is called
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frequency
amplitude
displacement
time period
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Question # 9
Transverse waves can be set up:
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Solids
Liquids
Gases
All of them
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Question # 10
If the mass of the simple pendulum becomes double, its time period
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increase
decreases
remains constant
none of them
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Question # 11
Longitudinal waves are also called:
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Congressional waves
Transverse waves
Radio waves
None of them
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Question # 12
Fidelity refers to
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Reproduction of original sound
Reproduction of original image
Reproduction of music
Reproduction of a CD from original copy
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Question # 13
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 # 14
If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
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frequency of S.H.M
period of S.H.M
wave form
none of them
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Question # 15
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 # 16
Decibel is unit of
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Intensity of light
x-ray radiation capacity
sound loudness
Energy of radiation
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