JEE Main 2016PhysicsThermal Properties of MatterMediumMCQ

JEE Main 2016 — Thermal Properties of Matter Question with Solution

JEE Main 2016 (09 Apr Online)

Question

A simple pendulum made of a bob of mass m and a metallic wire of a negligible mass has a time period of 2 s at T=0°C. If the temperature of the wire is increased, and the corresponding change in its time period is plotted against its temperature, the resulting graph is a line of slope S. If the coefficient of linear expansion of metal is α, then the value of S is

Choose an option

Show full solutionCorrect option: C
Correct answer
Cα

Step-by-step explanation

△TT=12△ll=12α∆θ

⇒∆T=12Tα∆θ

∆T∆θ=T2α

But,

T=2s

∆T∆θ=α

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About this question

This is a previous-year question from JEE Main 2016, 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.