JEE Main 2024 · PhysicsMultiple choiceSingle correctEasyConceptual

JEE Main 30 January 2024, Shift 2, Physics Q48

Question 48 of 90 in this shift, Physics question 18 of 30, Section A.

An electron revolving in

n^{\mathrm{th}}

Bohr orbit has magnetic moment

\mu_n

. If

\mu_n \propto n^x

, the value of

x

(1) $0$
(2) $1$ Official answer
(3) $2$
(4) $3$

Official answer

Option 2

NTA final key.

Chapter: Atoms
Topic: Magnetic Dipole Moment
Idea tested: Magnetic Moment in Bohr Orbits

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.