Light UPSC Questions

Physics

Light MCQ Questions


13.
Splitting of light into its constituent colours is known as
A.
Reflection
B.
Refraction
C.
dispersion
D.
Rarefraction
😑 View Answer Rough Work Error
ANSWER :
C. dispersion
14.
Braille system has _______ dot patterns
A.
61
B.
62
C.
63
D.
64
😑 View Answer Rough Work Error
ANSWER :
C. 63
15.
Which of the following materials cannot be used to make a lens
A.
Water
B.
Glass
C.
Plastic
D.
Clay
😑 View Answer Rough Work Error
ANSWER :
D. Clay
16.
Match the following
List I List II
a) Incident ray 1.) The ray that comes back from the surface after reflection
b) Reflected ray 2.) The light ray strikes any surface
c) Angle of incidence 3.) The angle between the normal and the reflected ray
d) Angle of reflection 4.) The angle between the normal and the incident ray
A.
a-1,b-2,c-3,d-4
B.
a-2,b-1,c-4,d-3
C.
a-4,b-3,c-2,d-1
D.
a-3,b-4,c-2,d-1
😑 View Answer Rough Work Error
ANSWER :
B. a-2,b-1,c-4,d-3
17.
Diffused reflection takes place in ________ surface
A.
Smooth
B.
polished
C.
rough
D.
regular
😑 View Answer Rough Work Error
ANSWER :
C. rough
18.
In Incident ray, reflected ray and the normal drawn at the point of incidence to the reflecting surface, lie in the _______ plane
A.
Same
B.
Different
C.
Parallel
D.
Perpendicular
😑 View Answer Rough Work Error
ANSWER :
A. Same