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JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 31 January 2024, Shift 2, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

Consider two physical quantities

A

and

B

related to each other as

E=\frac{B-x^2}{At}

where

E

,

x

and

t

have dimensions of energy, length and time respectively. The dimension of

AB

is

(1) $L^{0}M^{-1}T^{1}$
(2) $L^{2}M^{-1}T^{1}$ Official answer
(3) $L^{-2}M^{1}T^{0}$
(4) $L^{-2}M^{-1}T^{1}$

Official answer

Option 2

NTA final key.

Chapter: Units and Measurements
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

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.