Select the correct statement about rainbow. - Vidyadip

MCQ

Select the correct statement about rainbow.

A
We can see a rainbow in the western sky in the late afternoon
✓
The double rainbow has red on the inside and violet on the outside
C
A rainbow has an arc shape, since the earth is round
D
A rainbow on the moon is violet on the inside and red on the outside

✓

Answer

Correct option: B.

The double rainbow has red on the inside and violet on the outside

b
(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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