Asked by Jaziya | 22nd Jun, 2009, 09:30: PM

Expert Answer:

Rainbow is formed due to the dispersion of sun rays , when they fall on the suspended tiny droplets of water ( which act as prisms of small angles )  and it is visible to an observer having Sun at its back.

Hence the necessary condition for rainbow formation is presence of suspended droplets of water in atmosphere and sunrays ;  that is why , generally during a light drizzle we observe rainbow.

Answered by  | 23rd Jun, 2009, 01:51: AM

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