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Rainbow is due to

  • A.Absorption of sunlight in minute water droplets
  • B.Diffusion of sunlight through water droplets
  • C.Ionisation of water deposits
  • D.Refraction and reflection of sunlight by water droplets

Answer: D

A rainbow is due to refraction and reflection of sunlight by water droplets.

Light entering a raindrop is refracted and dispersed into colours, reflected once off the inside of the far surface, then refracted again on leaving. It emerges at about 42° to the incoming ray, which fixes the radius of the bow.

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