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. (a)`DeltaU_(1) = DeltaU_(2)`
B. (b)relation between `DeltaU_(1) "and" DeltaU_(2)` cannot be determined
C. (c)`DeltaU_(2) gt DeltaU_(1)`
D. (d)`DeltaU_(2) lt DeltaU_(1)`

Answer

A

Explanation

The internal energy of a system is a state function, i.e., change in internal energy only depends on the initial and the final position and not on the path chosen. Hence `DeltaU_(1) = DeltaU_(2)`