1.
A light bulb gives off white light.
2.
Objects that do not have their own light are called as non-luminous objects.
3.
Option A
4.
Option B
5.
Shadow moves in both the situation, if we move the source of light or if we move the object.
6.
Option C
7.
Option B
8.
Sun, fire is the natural source whereas bulb, a torch is the man-made sources.
9.
Option B
10.
Option B
11.
Stars in the sky together give light during the night.
12.
White light is made of all the colours of a rainbow.
13.
Option A
14.
Shadows are large in size in the morning and become smaller when reaches the head.
15.
Option C
16.
Option A
17.
Option D
18.
When an object allows light to pass through it, it is called as a transparent object.
19.
Option B
20.
When the shadow is brought closer to the source of light, the shadow enlarges.