JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 8 April 2023, Shift 1, Physics Q46

Question 46 of 90 in this shift, Physics question 16 of 30, Section A.

Dimension of

\frac{1}{\mu_0 \epsilon_0}

should be equal to

(1) $\mathrm{L/T}$
(2) $\mathrm{T/L}$
(3) $\mathrm{L^2/T^2}$ Official answer
(4) $\mathrm{T^2/L^2}$

Official answer

Option 3

NTA final key.

Chapter: Electromagnetic Waves
Topic: Coulomb's Law
Idea tested: Dimensional Analysis of Permittivity

Same idea in other shifts

Asked 3× in all

2 Apr 2025, Shift 2 · Q35If $\mu_0$ and $\epsilon_0$ are the permeability and permittivity of free space, respectively, then the dimension of…EasySingle correct
8 Apr 2024, Shift 2 · Q31If $\epsilon_0$ is the permittivity of free space and E is the electric field, then $\epsilon_0 E^2$ has the dimensions :EasySingle correct

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 108 of the 174 JEE Main shifts held from 2017 to 2026.