Question

Why is rainbow seen in the sky after rain and how i it formed

Answer 1

Rainbow is formed due to dispersion of sunlight by tiny water droplets suspended in the atmosphere after a rain shower. The tiny suspended water droplets act as small prisms. ... But during a rainshower, the sun is covered with clouds, due to which the sunlight does not strike the water droplets and rainbow is not formed.

Answer 2

This is formed by process called dispersion of light. that is when a beam of light is passed through a prisim it gets dispersed and comes out with different wavelengths that is 7 different colours. the same happens in the case of rainbow in which the sunlight is the beam and small water droplets acts as prisim and the rainbow us formed..... I have explained this phenomenon in simple manner hope it helps you ^_^