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Online Tests
Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers
Question # 1
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 # 2
A set of frequencies which are multiples of the fundamental frequency are called.
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Doppler effect
Nodal frequencies
Beat frequencies
Hamonics
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Question # 3
Beats can be heard when difference of frequency is not more than.
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8 Hz
10 Hz
4 Hz
6 Hz
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Question # 4
The process followed by Newton for the determination of speed of sound in air is
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Adiabatic
Isothermal
Isobaric
Isochoric
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Question # 5
Speed of sound in vacuum is
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280 ms-1
332 ms-1
333 ms-1
Zero ms-1
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Question # 6
When the amplitude of a wave become double, its energy becomes
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One half
Two times
Three times
Four times
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Question # 7
Sound waves are
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Electromagnetic waves
Transverse waves
Compressional waves
Matter waves
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Question # 8
The pitch of sound deepens upon
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Intensity of sound
Loudness of sound
Wavelength of sound
Frequency of sound
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Question # 9
Star moving towards the earth show
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Red shift
Blue shift
Green shift
Yellow shift
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Question # 10
The Newton's formula for the speed of sound in air is
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Question # 11
The profile of periodic waves generated by a source executing S.H.M is represented by a.
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Circle
Sine curve
Tangent curve
Cosine curve
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Question # 12
The speed of stars and galaxies can be calculated by
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Compton effect
Stefan's law
Doppler's effect
Pascal's law
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Question # 13
the louder the sound, the greater will be its.
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Speed
Frequency
Amplitude
Wave length
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Question # 14
The portion of the wave above mean level is called.
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Node
Antinode
Crest
Trough
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Question # 15
In stationary waves, the velocity of particle at the node is.
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Maximum
Infinite
Zero
Varible
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Question # 16
Stars moving away from Earth show a
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Green shift
Blue shift
Red shift
Yellow shift
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Question # 17
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 # 18
The distance between the consecutive nodes is
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Question # 19
The speed of sound is greater in solids due to their high.
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Density
Pressure
Temperature
Elasticity
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Question # 20
10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be
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1 Hz
2 Hz
5 Hz
10 Hz
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Question # 21
An oscillating mass-spring system produces
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Sound waves
Electromagnetic waves
Light waves
Periodic waves
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Question # 22
The distance between two consecutive trough is called.
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Displacement
Amplitude
Wave length
Wave front
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Question # 23
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 # 24
Two tunign forks of frequencies 260 Hz and 256 Hz are sounded together , the number of beats per second is.
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2
258
516
4
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