Light UPSC Questions

Light MCQ Questions

1.

Match the following

List I List II
a) Luminous Object 1.) emit light of their own
b) Transparent Object 2.) we can see, but not clearly
c) Translucent Object 3.) allowing light to pass through it
A.

a-1,b-3,c-2

B.

a-1,b-2,c-3

C.

a-3,b-2,c-1

D.

a-2,b-1,c-3

ANSWER :

A. a-1,b-3,c-2

2.
______ object does not allow light to pass through them
A.
Transparent object
B.
Translucent object
C.
Opaque object
D.
None of the above
ANSWER :
C. Opaque object
3.
What will happen, when opaque object comes in the path of light ______ are formed
A.
Shadows
B.
Reflection
C.
Refraction
D.
None of the above
ANSWER :
A. Shadows
4.

Which of the following statement is correct
(i) Pinhole cameras can be made with simple materials and can be used to image the sun and brightly lit objects
(ii) Mirror reflection gives us clear images
(iii) Opaque objects allow the light to pass through them partially.

A.

(i) and (ii) only

B.

(ii) and (iii) only

C.

(i) and (iii) only

D.

(i), (ii) and (iii)

ANSWER :

A. (i) and (ii) only

5.

Match the following

List I List II
a) Opaque 1.) Water
b) Transparent 2.) Sun
c) Translucent 3.) Wood
d) Luminous 4.) Some plastics
A.

a-1,b-2,c-3,d-4

B.

a-3,b-1,c-4,d-2

C.

a-4,b-3,c-2,d-1

D.

a-2,b-1,c-3,d-4

ANSWER :

B. a-3,b-1,c-4,d-2

6.
A mirror forms a virtual image of a real object because it must be a
A.
It must be a convex mirror
B.
It must be a concave mirror
C.
It must be a plane mirror
D.
It may be plane or convex mirror
ANSWER :
D. It may be plane or convex mirror