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PPSC Physics Chapter 5 Waves and Wave Properties of Light MCQs With Answers
Question # 1
One of the device to produce plane polarized light is.
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A prism
A bi prism
A plane mirror
A nicol prism
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Question # 2
LASER is a device for
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Producing a beam of white light
Producing a beam of monochromatic and coherent light
Producing a beam of high intensity incoherent light.
Producing highly penetrating's X -rays
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Question # 3
The velocity of the wave could be increased by
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Reducing the amplitude
Decreasing the frequency
Increasing the period
Stretching the spring more
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Question # 4
In which of the following the speed of sound will be maximum under similar conditions.
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N2
O2
CO2
H2
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Question # 5
The ratio of intensities of two sound waves is 4 : 9 what will be the ratio of their amplitudes.
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9:4
2:3
3:2
4:9
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Question # 6
Which of the following refers to the distance from crest to crest of a wave.
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Frequency
Wavelength
Amplitude
Period
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Question # 7
Which physical properties is most responsible for resonance.
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Frequency
Intensity
Pitch
Loundness
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Question # 8
Newton's rings are formed due to
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Diffraction of light
Interference of light
Polarization of light
Reflection of light
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Question # 9
On reflection of light from a source there occurs a change in
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Wavelength
Velocity
Period
Frequency
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Question # 10
Newton proposed his corpuscular theory on the basis on
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Newton's rings
Polarization
Dispersion of white light
Rectilinear property of light
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Question # 11
Bracket and plunk series of spectral lines lye in the
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Visible region
Ultraviolet region
Far infrared region
Infrared region
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Question # 12
Which of the following is a method of energy transfer.
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Conduction
Wave motion
Radiation
All of these
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Question # 13
Beats occurs because of.
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Reflection
Refraction
Interference
Doppler's effect
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Question # 14
During a thunderstorm, an observer sees a lighting flash Six second later he hears the thunder The speed of sound is 330 m s-1. Approximately how far away is the observer from the lighting.
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1/2 km
1/3 km
2 km
1/20 km
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Question # 15
Electromagnetic waves transmit.
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Energy only
Momentum only
Energy and momentum
Light
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