JEE Main - Previous Year Papers JEE MAIN 2025 JEE Mains 03 April 2025 Paper Shift -1 Single Correct MCQ
Published on: August 13, 2026

Physics
Section-A

During the melting of a slab of ice at 273 K at atmospheric pressure :

A
Internal energy of ice-water system remains unchanged.
B
Positive work is done by the ice-water system on the atmosphere.
C
Internal energy of the ice-water system decreases.
D
Positive work is done on the ice-water system by the atmosphere.

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Verified by Experts
The correct answer is:
D

Physics
Section-A

Volume decreases during melting of ice so positive work is done on ice water system by atmosphere Heat absorbed by ice water so is positive, work done by ice water system is negative Hence by first law of thermodynamics Positive

So internal energy increases

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