Figure shows the graph of pressure versus volume of an ideal gas, taken from state A to C via three different paths, i.e., ABC, AC and ADC. The internal energies of the gas corresponding to the states A and C are `(P_0 V_0) and (5P_0 V_0)` respectively. Determine
The change in internal energy of the gas during the process AC.

Explanation

Change in internal energy of the gas during the process `AC = Delta U=U_C -U_A`
`= 5P_0 V_0 -P_0 V_0 =4P_0 V_0`