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Friday, 9 October

JEE Main 2023 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 8 April 2023, Shift 2, Physics Q52

Question 52 of 90 in this shift, Physics question 22 of 30, Section B.

A steel rod of length 1 m and cross sectional area 10−410^{-4} m2^2 is heated from 0∘0^\circC to 200∘200^\circC without being allowed to extend or bend. The compressive tension produced in the rod is ____________ ×104\times 10^4 N. (Given Young's modulus of steel = 2×10112\times10^{11} Nm−2^{-2}, coefficient of linear expansion = 10−510^{-5} K−1^{-1})

Official answer

4

NTA final key.

Chapter
Thermal Properties of Matter
Topic
Thermal Expansion
Idea tested
Thermal Stress

Same idea in other shifts

Asked 2× in all
  1. 2 Apr 2017 (offline) · Q9An external pressure P is applied on a cube at 0°C so that it is equally compressed from all sides. K is the bulk modulus of the material…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.