JEE Main 2023PhysicsAtomic PhysicsEasyMCQ

JEE Main 2023 — Atomic Physics Question with Solution

JEE Main 2023 (10 Apr Shift 1)

Question

The angular momentum for the electron in Bohr’s orbit is L. If the electron is assumed to revolve in second orbit of hydrogen atom, then the change in angular momentum will be

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Show full solutionCorrect option: C
Correct answer
CL

Step-by-step explanation

Bohr's formula for angular momentum of an electron in an orbit is given by 

L=nh2π

For the first orbit, n=1 and the angular momentum is L1=h2π=L

For 2nd orbit

L2=2h2π=2L

Hence, the change in angular momentum is 

ΔL=2L-L=L

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About this question

This is a previous-year question from JEE Main 2023, covering the Atomic Physics 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.