JEE Main 2022 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 29 June 2022, Shift 2, Physics Q32

Question 32 of 90 in this shift, Physics question 2 of 30, Section A.

At what temperature a gold ring of diameter 6.230 cm be heated so that it can be fitted on a wooden bangle of diameter 6.241 cm ? Both the diameters have been measured at room temperature (27°C). (Given: coefficient of linear thermal expansion of gold

\alpha_L

=1.4 ×

10^{-5}

\mathrm{K^{-1}}

)

(1)125.7°C
(2)91.7°C
(3)425.7°C
(4)152.7°COfficial answer

Official answer

Option 4

NTA final key.

Chapter: Thermal Properties of Matter
Topic: Thermal Expansion
Idea tested: Shrink Fitting and Interference

Same topic in other shifts

All Thermal Expansion questions

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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 108 of the 174 JEE Main shifts held from 2017 to 2026.