Question

Select the correct statement about rainbow.

• A. We can see a rainbow in the western sky in the late afternoon
• B. 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 1

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