Q. Which one of the following graph is correct at constant pressure
A) [image:13_image11.emf]
B) [image:13_image12.emf]
C) [image:13_image13.emf]
D) [image:13_image14.emf]
Explanation
(a) According to ideal gas equation
$PV = nRT$ or $\frac{V}{T} = \frac{nR}{P}$
At constant pressure
$\frac{V}{T} =$ constant
Hence graph (a) is correct
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.