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PPSC Physics Chapter 5 Waves and Wave Properties of Light MCQs With Answers
Question # 1
Michelson's interferometer can b e sued to find
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Velocity of light
Velocity of sound
Wavelength of light
Wavelength of sound
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Question # 2
The average amount of energy transported by a wave per unit area per unit time is termed as
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Wave speed
Wave intensity
Wavelength
Wave amplitude
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Question # 3
X-rays are a part of electromagnetic spectrum and are characterized by frequencies higher that those of.
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Infrared radiation
Ultraviolet radiation
Far ultraviolet radiation
Far infrared radiation
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Question # 4
The energy following per second through a unit area held perpendicular to the direction of wave is.
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The loudness of the sound waves
The pitch of the sound waves
The intensity level of sound waves
The intensity of sound waves
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Question # 5
Tuning fork is a source of.
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Heat
Energy
Light
Sound
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Question # 6
In a diffraction pattern, the width of any fringe
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Is directly proportional to slit width
Is inversely proportional to slit with
Has no dependence on slit width
Is zero
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Question # 7
Plane polarized light can be produced by
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Reflection
Refraction
Scattering of light
All of these
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Question # 8
Any frequency higher than the fundamental frequency of a sound is known as.
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Overtone
Beat
Acoustics
Shockwaves
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Question # 9
A wave reflected from the boundary of a denser medium will have phase change
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45
o
60
o
90
o
180
o
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Question # 10
The fact that the edge of a shadow formed by a point source of light shining on an object is not sharp is an example of.
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Refraction
Diffraction
Polarization
Dispersion
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Question # 11
the amplitude of a wave indicates
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Wavelength
Frequency
Intensity of wave
Nature of wave
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Question # 12
Which of the following form of electromagnetic energy has the highest frequency.
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X rays
Game rays
Ultraviolet waves
Infrared waves
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Question # 13
The maximum displacement from the undisturbed position of the medium to the crest top is called.
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Wavelength
Amplitude
Period
Frequency
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Question # 14
Which type of oscillations produce resoncance.
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Free
Forced
Damped
All of these
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Question # 15
Which physical properties is most responsible for resonance.
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Frequency
Intensity
Pitch
Loundness
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Question # 16
A sound wave is an example of
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Transverse wave
longitudinal waves
Hair wave
Stationary wave
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Question # 17
When a transverse wave is reflected on going from a more dense to a less dense medium.
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There is no phase shift
There is a 180
o
phase shift
There is a phase shift of 360
o
A crest is transformed to a trough
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Question # 18
Blue colour of sky is due to.
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Diffraction
Reflection
Polarization
Scattering
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Question # 19
The loudness of a sound depend on its
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Frequency
Amplitude
Speed
Both a and b
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Question # 20
LASER beam can be used to generate three dimensional images objects in the process called.
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Tomography
Holography
Autography
Biography
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Question # 21
When amplitude of a wave becomes double its energy becomes.
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Xero
Double
4 times
6 times
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