JEE Main 2022PhysicsDual Nature of MatterEasyMCQ

JEE Main 2022 — Dual Nature of Matter Question with Solution

JEE Main 2022 (27 Jun Shift 1)

Question

An α particle and a carbon 12 atom has same kinetic energy K. The ratio of their de-Broglie wavelengths λα:λC12 is 

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Show full solutionCorrect option: A
Correct answer
A3:1

Step-by-step explanation

De-Broglie wavelength is stated as λ=hp=h2mK, where, K is kinetic energy and m is mass.

Here, Kα=KC‐12.

Now, the ratio λαλC12=12m4m=3:1

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About this question

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