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Friday, 9 October

JEE Main 2025 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 2 April 2025, Shift 1, Physics Q46

Question 46 of 75 in this shift, Physics question 21 of 25, Section B.

A steel wire of length 2 m and Young's modulus 2.0×1011 N m−22.0\times10^{11}\ \mathrm{N\,m^{-2}} is stretched by a force. If Poisson ratio and transverse strain for the wire are 0.2 and 10−310^{-3} respectively, then the elastic potential energy density of the wire is ___________ ×105\times10^5 (in SI units).

Official answer

25

NTA final key.

Chapter
Mechanical Properties of Solids
Topic
Elasticity
Idea tested
Elastic Energy Density

Same idea in other shifts

Asked 2× in all
  1. 9 Jan 2020, Shift 2 · Q8Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume…MediumSingle 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 42 of the 174 JEE Main shifts held from 2017 to 2026.