question_answer 5)

In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, an amount of work equal to J is done on the system. If the gas is taken from state A to B via a process in which the net heat absorbed by the system is cal., how much is the net work done by the system in the latter case? (Take 1 cal. =  J)  

Answer:

Here, when the change is adiabatic,                                 If  is change in internal energy of the system, then as   or In the second case, cal. As