Question

Why do we see a rainbow in the sky only after rainfall?​

Answer 1

After a shower of rain, rain drops are suspended in air and when a ray of light enters this drop, the drop acts as a prism and splits into its component colors as dispersion takes place. Lights of different colours emerge from the rain drops such as red at the top and violet at the bottom. Thus, a rainbow is formed.

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Answer 2

Answer:

because of the reflection of light in water droplets that present in atmosphere

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