Question

105. What will be the nature of change in internal
energy in case of precesses shown below ?

1) + ve in all cases
2) - ve in all cases
3) - ve in 1 and 3 and + ve in 2 and 4
4) zero in all cases​

Answer 1

Answer:

-ve in 1 and 3 and +ve in 2 and 4

Answer 2

Answer:

The change in internal energy in all the processes shown in the diagram is zero. There is no net change in internal energy

Explanation:

• All diagrams are graphs of the pressure and volume changes in a thermodynamic process
• In such graphs, the area under the curve depicts work done in the system during the process
• In all the 4 graphs shown, the processes are cyclical
• This means that after the completion of the process, the system is in the same state as before
• Due to the cyclical nature, there is no net work done and no net change in the internal energy of the system

#SPJ3