Question

Fill in the blanks with suitable words:
(a) When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
(b) White light is composed of ................... colours. The colour of white light deviated through the largest angle by a prism is ...................

Answer 1

(a) When a ray of light enters a prism, it bends towards the normal; as it leaves the prism, it bends away from the normal.

(b) White light is composed of seven colours. The colour of white light deviated through the largest angle by a prism is violet.