Give a definition for the ray of light.

Fill in the blank with an appropriate word:

The sun is the _____ (natural/artificial) source of light on the Earth.

Choose the right word and fill in the blank provided below.

A star _____ its own light. (emits/do not emit)

Circle the sources of light from the following objects.

List a few examples of non-luminous objects?

Choose the right word and fill in the blank:

Normally, sunlight is _____ (colourless/colourful) because the seven colours are mixed.

Write the sources of light.

Name two electric devices which are used for $\left(b\right)$ lighting

Name the thing with the help of which we get light. Fill in the blank and find out. 

 C _ n d l e

The complete word is _____.