Q. A volume $V$ and pressure $P$ diagram was obtained from state 1 to state 2 when a given mass of a gas is subjected to temperature changes. During this process the gas is
A) Heated continuously
B) Cooled continuously
C) Heated in the beginning and cooled towards the end
D) Cooled in the beginning and heated towards the end
Explanation
(c) [image:13_image21.emf]
Draw two isothermals one passing through points 1 and 2 the other through mid point of straight line joining 1 and 2
$T_{2} > T_{1},$ at point 1 temperature is $T_{1}$ and that at mid point is $T_{2}$ and then at point 2 again it is $T_{1}$
$\therefore$ The gas is first heated and then cooled towards end
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.