During a cloudy day, a primary and a secondary rainbow may be created, then the: (a) secondary rainbow is due to single internal reflection and is formed above the primary one. (b) primary rainbow is due to double internal reflection and is formed above the secondary one. (c) primary rainbow is due to double internal reflection and is formed below the secondary one. (d) secondary rainbow is due to double internal reflection and is formed above the primary one.

Answer: (d). Primary rainbow: one internal reflection, seen at about 42°. Secondary rainbow: two internal reflections, seen at about 51°, i.e. above the primary, fainter, with colours reversed. So the answer is (d).

During a cloudy day, a primary and a secondary rainbow may be… | NEET 2022 (Phase 2)

Q51NEET 2022 · PHASE 2Easy

Prism, Dispersion & Scattering

During a cloudy day, a primary and a secondary rainbow may be created, then the:

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Answer: (d)

Primary rainbow: one internal reflection, seen at about $42^\circ$ .
Secondary rainbow: two internal reflections, seen at about $51^\circ$ , i.e. above the primary, fainter, with colours reversed.
So the answer is (d).

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