Q. A thermodynamical system is changed from state $\left( p_{1}V_{1} \right)to\ (p_{2},V_{2})$ by two different processes, the quantity which will remain same will be
A) $\Delta Q$
B) $\Delta W$
C) $\Delta Q + \Delta W$
D) $\Delta Q - \Delta W$
Explanation
(d) For all processes, change in internal energy $\mathrm{\Delta}U(\mathrm{\Delta}Q - \mathrm{\Delta}W)$ does not change. It depends only on initial and final states.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.