Q.
Figure shows four $p - V$ diagrams. Which of these curves represent isothermal and adiabatic process?
A) $D$ and $C$
B) $A$ and $C$
C) $A$ and $B$
D) $B$ and $D$
Explanation
(a) In curves $A$ and $B$, pressure and volume both increase. Therefore, temperature must rise and heat must be supplied/work is done. Therefore, $A$ and $B$ cannot be required curves. Out of $C$ and $D$, slope of $D$ is smaller. Therefore, $D$ is isothermal curve and $C$ is adiabatic curve
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.