JEE Main 2021 — Wave Optics Question with Solution
From: JEE Main 2021 (Online) 31st August Evening Shift
Question
In a Young's double slit experiment, the slits are separated by 0.3 mm and the screen is 1.5 m away from the plane of slits. Distance between fourth bright fringes on both sides of central bright is 2.4 cm. The frequency of light used is ______________ 1014 Hz.
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Show full solutionCorrect answer: 5
Correct answer
5
Step-by-step explanation
8 = 2.4 cm
= 2.4 cm
f = 5 1014 Hz
= 2.4 cm
f = 5 1014 Hz
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This is a previous-year question from JEE Main 2021, 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.