Q. Two gases of equal mass are in thermal equilibrium. If $P_{a},P_{b}$ and $V_{a}$ and $V_{b}$ are their respective pressure and volumes, then which relation is true
A) $P_{a} \neq P_{b};V_{a} = V_{b}$
B) $P_{a} = P_{b};V_{a} \neq V_{b}$
C) $\frac{P_{a}}{V_{a}} = \frac{P_{b}}{V_{b}}$
D) $P_{a}V_{a} = P_{b}V_{b}$
Explanation
(d) Thermal equilibrium implies that the temperature of gases is same. Hence Boyle’s law is applicable $i.e$
$P_{a}V_{a} = P_{b}V_{b}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.