A) \[-15\]
B) \[+15\]
C) \[+5\]
D) \[-5\]
Correct Answer: C
Solution :
: Internal energy\[(dU)\]remains constant as long as the temperature of system remains constant. In first case, \[dQ=dW+dU\] or \[40=30+dU\] or \[dU=10\text{ }cal\]. In second case, \[dQ=dW+dU=-5\text{ }+10=5\text{ }cal\].You need to login to perform this action.
You will be redirected in
3 sec