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Question

Rainbow is caused due to:


A

Reflection of sun light in air

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B

Dispersion of sun light from water drops

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C

Multiple reflections of sunlight from water drops

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D

Refraction of sun rays from water drops

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Solution

The correct option is B

Dispersion of sun light from water drops


The phenomenon of the splitting up of white light into its component colours is dispersion. It occurs because different colours in white light undergo different extents of refraction. Dispersion of sunlight occurs when white light breaks into its component spectrum of colours as it passes through the rain drops. This natural phenomenon forms a Rainbow.


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