JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 2 April 2025, Shift 2, Physics Q35

Question 35 of 75 in this shift, Physics question 10 of 25, Section A.

\mu_0

and

\epsilon_0

are the permeability and permittivity of free space, respectively, then the dimension of

\left(\frac{1}{\mu_0\epsilon_0}\right)

is :

(1) $L/T^2$
(2) $T^2/L$
(3) $T^2/L^2$
(4) $L^2/T^2$ Official answer

Official answer

Option 4

NTA final key.

Chapter: Units and Measurements
Topic: Coulomb's Law
Idea tested: Dimensional Analysis of Permittivity

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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.