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KVPY2019PhysicsRay Optics

Various optical processes are involved in the formation of a rainbow. Which of the following provides the correct order in time in which these processes occur?

Options

  1. ARefraction, total internal reflection, refraction.
  2. BTotal internal reflection, refraction, total internal reflection.
  3. CTotal internal reflection, refraction, refraction.
  4. DRefraction, total internal reflection, total internal reflection.

Correct answer

A. Refraction, total internal reflection, refraction.

Step-by-step solution

Formation of rainbow is shown below. So, processes involved in formation of rainbow in correct order are: refraction, total internal reflection, refraction. Hence, the correct order is given in option (a).

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