question_answer

A system goes from A to B via two processes and II as shown in figure. Ifandare the changes in internal energies in the processes I and II respectively, then              [AIEEE 2005]

A)  \[\Delta {{U}_{1}}=\Delta {{U}_{2}}\]

B)  relation between\[\Delta {{U}_{1}}\]and\[\Delta {{U}_{2}}\]cannot be determined

C)  \[\Delta {{U}_{2}}>\Delta {{U}_{1}}\]

D)  \[\Delta {{U}_{2}}<\Delta {{U}_{1}}\]

Correct Answer: A

Solution :

[a] The change in internal energy does not depend upon path followed by the process. It only depends on initial and final states.

Hence,