Question

can I know how the rainbow is done​

Answer 1

Rainbows are formed when sunlight is scattered from raindrops into the eyes of an observer. ... The sun needs to be behind the viewer. The sun needs to be low in the sky, at an angle of less than 42° above the horizon. The lower the sun in the sky the more of an arc of a rainbow the viewer will see.

Answer 2

Hello friend!!

A rainbow is formed due to the scattering of the sunlight when passing through the raindrops. Small raindrops stay in the atmosphere even after the rain is over. When sunlight passes through them, the raindrops act as prisms and scatter white light into seven colours. Thus a rainbow is formed.