Briefly explain why an observer sees a spectrum of colors through rain drops when is it raining on a sunny day.

Briefly explain why an observer sees a spectrum of colors through rain drops when is it raining on a sunny day.

White light undergoes dispersion as it enters into the rain drops of water in the sky. Total internal reflection takes place at the opposite side of the rain drops and different colors emerge from the rain drops after refraction. Hence the spectrum.

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