JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 28 July 2022, Shift 1, Physics Q36

Question 36 of 90 in this shift, Physics question 6 of 30, Section A.

The force required to stretch a wire of cross-section

1\ \mathrm{cm^2}

to double its length will be : (Given Yong's modulus of the wire

=2\times10^{11}\ \mathrm{N/m^2}

)

(1) $1\times10^7$ N
(2) $1.5\times10^7$ N
(3) $2\times10^7$ NOfficial answer
(4) $2.5\times10^7$ N

Official answer

Option 3

NTA final key (2022 Session 2).

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

Same idea in other shifts

Asked 13× in all

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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.