A gas can be taken from A to B via two different processes ACB and ADB.
When the path ACB is used 60J if heat flows into the system and 30J of work is done by the system. If path ADB is used work done by the system is 10J. The heat Flows into the system in path ADB is:
(1) 80 J
(2) 20 J
(3) 100 J
(4) 40 J
