Question

What is a rainbow? How is rainbow produced? What information do you get about sunlight from the formation of a rainbow?

Answer 1

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Answer 2

Answer:

Explanation:

hi friend!

Rainbow is formed due to following reasons:

→ Refraction

→ Dispersion of white light

→ total internal reflection.

Essential condition for formation of rainbow:

1. Presence of raindrops

2. To view rainbow, sun should be at your back.

Formation:

The rays of sunlight, enter the drop near its top surface. At first refraction occurs , then white light is split up into & colours , violet most deviated and red least.

Reaching the opposite side of drop each colour is refracted back into the drop because of total internal reflection

arriving at the surface of the drop , each colour is again refracted into air.

We observe the rainbow when we view in between 42-20 degrees.

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