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A gas can be taken from A to B via two different processes ACB and ADB. P V C B A D When path ACB is used 60 J of heat flows into the system and 30 J of work is done by the system. If path ADB is used work done by the system is 10 J. The heat Flow into the system in path ADB is :

1. 40 J
2. 20 J
3. 100 J
4. 80 J

Correct answer: 40 J

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