Question

Rainbow is formed due to

• A. scattering and refraction
• B. internal reflection and dispersion
• C. reflection only
• D. diffraction and dispersion.

Answer 1

Answer: (B)

The rainbow is an example of the dispersion
of sunlight by the water drops in the atmosphere.
This is a phenomenon due to a combination of
the refraction of sunlight by spherical water
droplets and of internal (not total) reflection.