For one complete cycle of a thermodynamic process gas as shown in the P-V diagram, which of following correct?

Options

A. `Delta E_("int")=0, Q lt 0`
B. `Delta E_("int")=0, Q gt 0`
C. `Delta E_("int") gt 0, Q lt 0`
D. `Delta E_("int") lt 0, Q gt 0`

Answer

A

Explanation

For cyclic process `Delta U=0 implies Delta E_("int")=0` and `Delta Q= Delta W lt 0` (because direction is anticlockwise).