JEE Main 2021PhysicsThermal Properties of MatterEasyMCQ

JEE Main 2021Thermal Properties of Matter Question with Solution

JEE Main 2021 (24 Feb Shift 1)

Question

Each side of a box made of metal sheet in cubic shape is a at room temperature T, the coefficient of linear expansion of the metal sheet is α. The metal sheet is heated uniformly, by a small temperature ΔT, so that its new temperature is T+ΔT. Calculate the increase in the volume of the metal box.

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Show full solutionCorrect option: B
Correct answer
B3a3αΔT

Step-by-step explanation

ΔV=VγΔT

ΔV=3a3αΔT

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About this question

This is a previous-year question from JEE Main 2021, covering the Thermal Properties of Matter chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.