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Physics English Medium Fsc Part 1 Chapter 9 Online MCQs Test MCQs With Answers
Question # 1
In red light is used as compare to blue light then fringe spacing.
Choose an answer
Decreases
Remain same
Increases
Becomes zero
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Question # 2
Which is nooptically active
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Sugar
Tartaric acid
Water
Sodium chloride
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Question # 3
The Bragg's equation is given by
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Question # 4
Young in 1801 performed experiment for the first time about
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Interference
Diffraction
Polarization
Particle nature of light
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Question # 5
Standard metal according to Michelson's interferometer is equivalent to
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1553163.5 wave meter
3 x 108meter
15503000 meter
None of these
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Question # 6
Which one of the following can not be polarized.
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Ultra violet rays
Radio waves
T.V. Waves
Sound waves
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Question # 7
Fringe spacing in Young's double slit experiment increases due to increase in.
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Slit separation
Wave length
Order of Fringe
Frequency of source
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Question # 8
In blue light is used as compare to red light then fringe spacing.
Choose an answer
Increase
Decreases
Remain same
Becomes zero
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Next
Question # 9
In young's double slit experiment for the interference the central region will be
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Dark
Bright
Coloured
None of these
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Question # 10
A ray of light shows the direction of propagation of light It is line which is.
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Normal to the wave front
Parallax to the wave front
Opposite to the wave front
Equal to the wave front
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