Question
Select the correct statement about rainbow.
✓
Answer
(b)
In late afternoon rainbow is visible in east side when light of sun in west side is reflected and refracted by a layer of water droplets.
Rainbow is circular because locous of reflected rays reaching eye of observer is a circle. Its roundness is not due to roundness of earth.
There is no rainbow on moon due to lack of atmosphere.
In case of a primary rainbow, violet colour is on inside and red colour is on outside of arc.
In case of a secondary rainbow, red colour is on inside and violet colour is on outside of arc.
So, none of the option is correct. Option $(b)$ is correct, if only secondary rainbow is considered.
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