" Explain the formation of rainbow.(A "

Explain the formation of a rainbow.

Based on refraction and total internal reflection explain the formation of rainbow.

Give an example of 'Natural Spectrum'. Explain the formation of a rainbow in sky with a neat labelled diagram.

Explain formation of rainbow.

Prove the following statement : A rainbow is the combined effect ( an exhibition ) of the refraction, dispersion , and total internal reflection of light ( taken together ) . OR With neat labelled diagram, explain how the formation of rainbow occurs.