JEE Mains · Physics · STD 11 - 11. thermodynamics
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.
Answer & Solution
Correct Answer
(D) Positive work is done on the ice-water system by the atmosphere.
Step-by-step Solution
Detailed explanation
Volume decreases during melting of ice so positive work is done on ice water system by atmosphere Heat absorbed by ice water so \(\Delta \mathrm{Q}\) is positive, work done by ice water system is negative Hence by first law of thermodynamics…
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