A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are : \[{{P}_{A}}=3\times {{10}^{4}}Pa,\ {{P}_{B}}=8\times {{10}^{4}}Pa\] and \[{{V}_{A}}=2\times {{10}^{-3}}{{m}^{3}},\ {{V}_{D}}=5\times {{10}^{-3}}{{m}^{3}}\] In process AB, 600 J of heat is added to the system and in process BC, 200 J of heat is added to the system. The change in internal energy of the system in process AC would be [CBSE PMT 1992]

A thermodynamic process is shown in the figure. The pressures and volu

1.	A thermodynamic process is shown in the figure. The pressures and volumes corresponding to some points in the figure are : \[{{P}_{A}}=3\times {{10}^{4}}Pa,\ {{P}_{B}}=8\times {{10}^{4}}Pa\] and \[{{V}_{A}}=2\times {{10}^{-3}}{{m}^{3}},\ {{V}_{D}}=5\times {{10}^{-3}}{{m}^{3}}\] In process AB, 600 J of heat is added to the system and in process BC, 200 J of heat is added to the system. The change in internal energy of the system in process AC would be [CBSE PMT 1992]
A.	560 J
B.	800 J
C.	600 J
D.	640 J
Answer» B. 800 J