Question

(a) What is dispersion of white light? State its cause.(b) ”Rainbow is a n example of dispersion of sunlight.” Justify this statement by explaining, with the help of a labelled diagram, the formation of a rainbow in the sky. List two essential conditions for observing a rainbow.

Answer 1

DISPERSION :-
The splitting of white light into seven constituent colours (VIBGYOR). When passed through a glass prism is called dispersion.

FORMATION OF RAINBOW:-
Rainbow is a natural spectrum appearing in the sky. It is caused by dispersion of sunlight by tiny water droplets present in the atmosphere. These water droplets act like small prism

Answer 2

DISPERSION :-

The splitting of white light into seven constituent colours (VIBGYOR). When passed through a glass prism is called dispersion.

FORMATION OF RAINBOW:-

Rainbow is a natural spectrum appearing in the sky. It is caused by dispersion of sunlight by tiny water droplets present in the atmosphere. These water droplets act like small prism