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in Physics by (61.9k points)

Write the conditions for observing a rainbow. Show, by drawing suitable diagrams, how one understands the formation of a rainbow.

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The conditions for observing a rainbow are :

(i) The sun comes out after a rainfall.

(ii) The observer stands with the sun towards his/her back.

Formation of a rainbow :

  • The rays of light reach the observer through a refraction, followed by a reflection and a refraction.
  • Figure shows red light ,from drop 1 and violet light from drop 2, reaching the observers eye.

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