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JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 25 July 2022, Shift 1, Physics Q48

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

The momentum of an electron revolving in

n^{\mathrm{th}}

orbit is given by : (Symbols have their usual meanings)

(1) $\frac{nh}{2\pi r}$ Official answer
(2) $\frac{nh}{2r}$
(3) $\frac{nh}{2\pi}$
(4) $\frac{2\pi r}{nh}$

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter: Atoms
Topic: Bohr's Atomic Model
Idea tested: Angular Momentum Quantization

Same idea in other shifts

Asked 2× in all

4 Apr 2025, Shift 2 · Q41Given below are two statements : Statement (I) : The dimensions of Planck's constant and angular momentum are same. Statement (II) : In…EasyTwo statements

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.