Question

draw ray diagram to show the formation of rainbow state the main cause of its formation​

Answer 1

Answer:

There are three phenomena responsible for the formation of a rainbow.

1. Dispersion - Splitting of white light into its seven constituent colours.
2. Total Internal Reflection- The reflection of white light within the droplet.
3. Refraction of white light - Different colours have different refractive index and different wavelengths, hence they refract at different angles.