Light UPSC Questions

Physics

Light MCQ Questions


7.
The angle of incidence is equal to the angle of reflection is known as
A.
Law of reflection
B.
Law of refracton
C.
Law of retardation
D.
None of the above
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ANSWER :
A. Law of reflection
8.
When the light is incident on the smooth, polished surface is called
A.
Diffused reflection
B.
Irregular reflection
C.
Regular reflection
D.
None of the above
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ANSWER :
C. Regular reflection
9.
Visually impaired persons can read and write using
A.
Braille system
B.
Digital pens
C.
Earing Aids
D.
Electronic writer
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ANSWER :
A. Braille system
10.
Splitting of light into its constituent colours is known as
A.
Reflection
B.
Refraction
C.
dispersion
D.
Rarefraction
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ANSWER :
C. dispersion
11.
Braille system has _______ dot patterns
A.
61
B.
62
C.
63
D.
64
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ANSWER :
C. 63
12.
Which of the following materials cannot be used to make a lens
A.
Water
B.
Glass
C.
Plastic
D.
Clay
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ANSWER :
D. Clay