JEE Advanced Model Paper 6 with solutions for online practice

Passage-III

The first law of thermodynamics for a closed system is dU = dq + dw ; where dw = dwpv + dwnon−pv . The most kind of wnon−pv is electrical work. As per IUPAC conventionwork done on the system is positive.

Question : 56 of 60

Marks: +1, -0

The system generates 50J of electrical energy and delivers 150J of PV- work against thesurroundings, while releasing 300J heat energy. The change in internal energy of thesystem is (-y × 102) y is .....

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