JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 7 April 2025, Shift 1, Physics Q32

Question 32 of 75 in this shift, Physics question 7 of 25, Section A.

Two wires A and B are made of same material having ratio of lengths

\frac{L_A}{L_B} = \frac{1}{3}

and their diameters ratio

\frac{d_A}{d_B} = 2

. If both the wires are stretched using same force, what would be the ratio of their respective elongations ?

(1) $1:3$
(2) $1:12$ Official answer
(3) $1:6$
(4) $3:4$

Official answer

Option 2

NTA final key.

Chapter: Mechanical Properties of Solids
Topic: Elasticity
Idea tested: Elastic Moduli

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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.