Q. In an isothermal change of an ideal gas, $\mathrm{\Delta}U = 0$. The change in heat energy $\mathrm{\Delta}Q$ is equal to
A) $0.5\ W$
B) $W$
C) $1.5\ W$
D) $2\ W$
Explanation
(b) According first 1st law of thermodynamics
$\mathrm{\Delta}Q = \mathrm{\Delta}U + \mathrm{\Delta}W$
$\mathrm{\Delta}Q = 0 + W = W$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.