JEE Main 2021PhysicsDual Nature of MatterMediumMCQ

JEE Main 2021 — Dual Nature of Matter Question with Solution

JEE Main 2021 (22 Jul Shift 1)

Question

An electron of mass me and a proton of mass mP are accelerated through the same potential difference. The ratio of the de-Broglie wavelength associated with the electron to that with the proton is 

Choose an option

Show full solutionCorrect option: C
Correct answer
Cmpme

Step-by-step explanation

KE=eΔV
λe=h2 me(eΔV)
λp=h2 mp(eΔV)

⇒  λeλp=mpme

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About this question

This is a previous-year question from JEE Main 2021, covering the Dual Nature of Matter 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.