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Question

In the creation of rainbow, the process occurs in which of the following order?

A
reflection, refraction, dispersion and total internal reflection
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B
refraction, reflection, dispersion and total internal reflection
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C
dispersion, refraction, reflection and total internal reflection
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D
total internal reflection, refraction, dispersion and reflection
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Solution

The correct option is C reflection, refraction, dispersion and total internal reflection
When white light is incident on a water droplet, some light is reflected in air and the rest is refracted inside the droplet. Then this light is dispersed due to prismatic action of droplet and dispersed light rays suffer total internal reflection and come out from the droplet. Thus the order is reflection, refraction, dispersion, total internal reflection.

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