Which of the following statement is correct? (a) In primary rainbow, observer sees red colour on the top and violet on the bottom (b) In primary rainbow, observer sees violet colour on the top and red on the bottom (c) In primary rainbow, light wave suffers total internal reflection twice before coming out of water drops. (d) Primary rainbow is less bright than secondary rainbow.

Answer: (a). Primary rainbow: one internal reflection, red at the top (about 42°), violet at the bottom (about 40°). (c) is wrong (that is the secondary bow) and (d) is wrong (secondary is fainter). So the answer is (a).

Which of the following statement is correct? | JEE Main 2022 (25 Jul, Shift 1)

Q52JEE Main 2022 · 25 JUL · SHIFT 1Easy

Prism, Dispersion & Scattering

Which of the following statement is correct?

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Answer: (a)

Primary rainbow: one internal reflection, red at the top (about $42^\circ$ ), violet at the bottom (about $40^\circ$ ).
(c) is wrong (that is the secondary bow) and (d) is wrong (secondary is fainter).
So the answer is (a).

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