Q.
$p - V$ plots for two gases during adiabatic processes are shown in figure. Plots 1 and 2 should correspond respectively to
A) He and $O_{2}$
B) $O_{2}$ and He
C) He and $Ar$
D) $O_{2}$ and $N_{2}$
Explanation
(b) As is clear from figure,
Slope of curve 2 > Slope of curve 1
$(\gamma p)_{2} = (\gamma p)_{1}$
$\gamma_{2} > \gamma_{1}$
As $\gamma_{He} > \gamma O_{2}$
$\therefore$ adiabatic curve 2 corresponds to helium and adiabatic curve 1 corresponds to oxygen
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.