A system goes from A and B via two processes. I and II as shown in figure. If `DeltaU_1 and DeltaU_2` are the changes in internal energies in the processes I and II respectively, then

Options

A. `DeltaU_(1) = DeltaU_(2)`
B. relation between `DeltaU_(1)` and `DeltaU_(2)` cannot be determined
C. `DeltaU_(2) gt DeltaU_(1)`
D. `DeltaU_(2) lt DeltaU_(1)`

Answer

A

Explanation

The change in internal energy does not depend upon path allowed by the process. It only depends on initial and final states.
Hence, `DeltaU_(1) = DeltaU_(2)`