Which of the following phenomena of light

Question:

Which of the following phenomena of light are involved in the formation of a rainbow ?

(a) Reflection, refraction and dispersion

(b) Refraction, dispersion and total internal reflection.

(c) Refraction, dispersion and internal reflection.

(d) Dispersion, scattering and total internal reflection

Solution:

(c).

Explanation : When light falls on a droplet, refraction of light takes place. This refracted light suffers dispersion. Then the light suffer total internal

reflection from other surface of the droplet.

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