Question

The given figure shows an indicator diagram. During path 1-2-3, 100 cal is given to the system and 40 cal worth work is done. During path 1-4-3, the work done is 10 cal. Then

• A. heat given to the system during path 1-4-3 is 70 cal.
• B. If the system is brought form 3 to 1 along straight line path 3-1, work done is worth 25 cal
• C. along straight line path 3-1, the heat ejected by the system is 85 J
• D. The internal energy of the system in state 3 is 140 cal above that in state 1

Answer 1

Answer: (A), (B), (C)

The correct options are
A heat given to the system during path 1-4-3 is 70 cal.
B If the system is brought form 3 to 1 along straight line path 3-1, work done is worth 25 cal
C along straight line path 3-1, the heat ejected by the system is 85 J