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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