JEE Main 2022PhysicsWave OpticsEasyMCQ

JEE Main 2022 — Wave Optics Question with Solution

JEE Main 2022 (28 Jun Shift 2)

Question

In young's double slit experiment performed using a monochromatic light of wavelength λ, when a glass plate μ=1.5 of thickness xλ is introduced in the path of the one of the interfering beams, the intensity at the position where the central maximum occurred previously remains unchanged. The value of x will be

Choose an option

Show full solutionCorrect option: B
Correct answer
B2

Step-by-step explanation

Since the intensity at the central maxima remains unchanged, the change in the path difference should be an integral multiple of the wavelength. Therefore,

Δx=μ-1t=nλ⇒1.5-1xλ=nλ⇒x=n0.5=2n

For n=1

x=2

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About this question

This is a previous-year question from JEE Main 2022, 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.