- The rainbow appears in the sky during a rain shower.
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The water droplets act as small prisms. When sunlight enters the water
droplets present in the atmosphere, they refract and disperse the
incident sunlight.
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Then they reflect it internally inside the droplet and finally again refract
it. As a collective effect of all these phenomenon, the seven coloured
rainbow is observed.
Explain how formation of rainbow occurs. Ans.
