JEE Main 2016PhysicsThermodynamicsMediumMCQ

JEE Main 2016 — Thermodynamics Question with Solution

JEE Main 2016 (10 Apr Online)

Question

A Carnot freezer takes heat from water at 0oC inside it and rejects it to the room at a temperature of 27oC. The latent heat of ice is 336×103 Jkg-1. If 5kg of water at 0oC is converted into ice at 0oC by the freezer, then the energy consumed by the freezer is close to :

Choose an option

Show full solutionCorrect option: D
Correct answer
D1.67×105 J

Step-by-step explanation

Q=mL

=5×336×103=Qsink

QsinkQsource=TsinkTsource

∴   Qsource=TsourceTsinkQsink

∴   Work done =Qsource-Qsink

=QsinkTsourceTsink-1

=5×336×103300273-1

=1.67×105 J

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About this question

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