Q. Volume-temperature graph at atmospheric pressure for a monoatomic gas ($V\ in\ m^{3},\ T\ in\ ℃)$ is
A) [image:13_image6.emf]
B) [image:13_image7.emf]
C) [image:13_image8.emf]
D) [image:13_image9.emf]
Explanation
(c) At constant pressure, the volume of a given mass of a gas is directly proportional to its absolute temperature ($T)$.
[image:13_image28.emf]
$ie.,\ \ \ \ \ \ \ \ \ \ \ \ \ \ \frac{V}{T}$=constant
This is another form of Charles’ law. Hence, variation of volume with temperature is as shown.
Hence, correct graph will be (C).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.