JEE Main 2015 — Wave Optics Question with Solution
JEE Main 2015 (04 Apr)
Question
On a hot summer night, the refractive index of air is the smallest near the ground and increases with a height from the ground. When a light beam is directed horizontally, the Huygens' principle leads us to conclude that as it travels, the light beam,
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Show full solutionCorrect option: A
Step-by-step explanation
Every point on the horizontal ray of light behaves as a source of light. Thus, the secondary rays which are directed towards denser medium would bend towards the normal. These phenomena cause the bending of the rays upwards.
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This is a previous-year question from JEE Main 2015, covering the Wave Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.