JEE Main 2020 — Wave Optics Question with Solution
From: JEE Main 2020 (Online) 3rd September Evening Slot
Question
Two light waves having the same wavelength in vacuum are in phase initially. Then the first wave
travels a path L1
through a medium of refractive index n1
while the second wave travels a path of length
L2
through a medium of refractive index n2
. After this the phase difference between the two waves is :
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Phase difference = optical path difference
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This is a previous-year question from JEE Main 2020, 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.