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The spread in colors in a rainbow on sky is primarily due to
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- dispersion of sunlight
- reflection of sunlight
- refraction of sunlight
- total internal reflection of sunlight
Correct Option: A
Rainbow (a band of seven colours - VIBGYOR) is a natural spectrum. It is caused by dispersion (i.e. splitting of white light into seven constituent colours VIBGYOR) of sunlight by tiny droplete of water present in the atmosphere.
