Question
Question: The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work don...
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done by the system in going from A® B ® C is 30 J and 40 J heat is given to the system. The change in internal energy between A and C is –
A
10 J
B
70 J
C
84 J
D
134 J
Answer
10 J
Explanation
Solution
Heat given DQ = 40 J and work done DW = 30 J
̃ DU = DQ – DW = 40 – 30 = 10 J