JEE Main 2024 — Wave Optics Question with Solution
From: JEE Main 2024 (Online) 1st February Evening Shift
Question
In Young's double slit experiment, monochromatic light of wavelength 5000 Å is used. The slits are apart and screen is placed at away from slits. The distance from the centre of the screen where intensity becomes half of the maximum intensity for the first time is _________ .
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Show full solutionCorrect answer: 125
Correct answer
125
Step-by-step explanation
Let intensity of light on screen due to each slit is
So internity at centre of screen is
Intensity at distance y from centre-
So internity at centre of screen is
Intensity at distance y from centre-
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This is a previous-year question from JEE Main 2024, 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.