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Online Tests
Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers
Question # 1
The periodic variations of sound between maximum and minimum loudness are called.
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Doppler's effect
reflection
Laplace correction
Beats
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Question # 2
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Question # 3
According to Newton's formula, the speed of sound in air at STP is
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332 ,ms-1
340 ms-1
350 ms-1
280 ms-1
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Question # 4
An oscillating mass-spring system produces
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Sound waves
Electromagnetic waves
Light waves
Periodic waves
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Question # 5
Two waves of same frequency and moving in the same direction produces.
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Interference
Diffraction
Beats
Stationary waves
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Question # 6
The apparent change in the pitch of sound due to relative motion is called.
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Carnot theorem
Interference
Doppler effect
Beats
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Question # 7
the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to
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f/v
Vf
V/f
f/V2
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Question # 8
the velocity of sound at 0
o
C is 332 ms-1, the velocity of sound at 10
o
C will be
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337.1 ms-1
338.1 ,ms-1
342.1 ms-1
328.1 ms-1
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Question # 9
Who did give the correct formula for the speed of sound in air?
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Boyle
Laplace
Newton
Einstein
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Question # 10
Longitudinal waves do not exhibit
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Reflection
Refraction
Polarization
Diffraction
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Question # 11
Diffraction is a special type of
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Reflection
Polarization
Interference
Refraction
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Question # 12
Frequency range of hearing of cats is.
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20-20000 Hz
10- 10000 Hz
60-20000 Hz
60-70000 Hz
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Question # 13
Speed of sound in aluminum at 20
o
C is.
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3600 m/s
5100 m/s
5130 m/s
3500 m/s
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Question # 14
Light waves are
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Longtail waves
Transvers waves
Stationary waves
Mechanical wave
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Question # 15
When the amplitude of a wave is increase to doubled is energy.
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Remain the same
Increases 4 times
Increases by two times
Decreases by half
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Question # 16
The speed of sound increases with the increase of in
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Pressure
Volume
Temperature
Density
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Question # 17
When two waves of same frequency travel in opposite direction, the phenomenon will be
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Diffraction
Stationary waves
Polarization
Interference
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