Practice portal › Ray Optics and Optical Instruments › Refraction through a Prism
Asked in NEET 2019 · Dispersion and scattering
Idea: the question wants the one false statement, so test each against how a rainbow reaches the eye.
Sunlight enters a raindrop, is dispersed, reflects inside and comes back out towards the same side of the sky it came from, so the bow always lies opposite the sun.
The observer therefore has to stand with the sun behind and the rain in front.
That makes the statement about facing the sun the wrong one; the other three are all correct descriptions of how the bows are formed.
So the wrong answer is that an observer can see a rainbow when his front is towards the sun.
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