Q. In isochoric process
A) $\mathrm{\Delta}U = \mathrm{\Delta}Q$
B) $\mathrm{\Delta}Q = \mathrm{\Delta}W$
C) $\mathrm{\Delta}U = \mathrm{\Delta}W$
D) None of these
Explanation
(a) An isochoric process is a constant volume process. In an isochoric process
V=constant or $\mathrm{\Delta}V = 0$
So, work done
$\ \ \ \ \ \ \ \ \ \ \ \mathrm{\Delta}W = p\ \mathrm{\Delta}V = 0$
From first law of thermodynamics
$\ \ \ \ \ \ \ \ \ \ \ \mathrm{\Delta}Q = \mathrm{\Delta}U + \mathrm{\Delta}W$
$\Rightarrow \ \ \ \ \ \ \mathrm{\Delta}Q = \mathrm{\Delta}U$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.