JEE Main 2023PhysicsDual Nature of MatterEasyMCQ

JEE Main 2023 — Dual Nature of Matter Question with Solution

JEE Main 2023 (08 Apr Shift 1)

Question

Proton (P) and electron (e) will have same de-Broglie wavelength when the ratio of their momentum is (assume, mp=1849 me)

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Correct answer
A1 : 1

Step-by-step explanation

The De Broglie wavelength is λ=hmv

The momentum is given by p=mv

The momentum of proton is pp=mpvp

The momentum of electron is  p'=meve

Since h is the Planck's constant and it is given that both wavelengths are same, i.e.

λp=λe, so pp=p'.

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About this question

This is a previous-year question from JEE Main 2023, 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.