Q 11-12-005NEETNEET 2024Top questionMedium
The following graph represents the T-V curves of an ideal gas (where T is the temperature and $V$ the volume) at three pressures $P_1$, $P_2$ and $P_3$ compared with those of Charles's law represented as dotted lines. Then the correct relation is:
Answer: (B) $P_1 > P_2 > P_3$
At constant pressure, $PV = nRT$ gives
$$T = \frac{P}{nR}V$$
So the slope of a $T$-$V$ line is proportional to the pressure: the steeper the line, the higher the pressure.
$P_1$ is the steepest, then $P_2$, then $P_3$:
$$P_1 > P_2 > P_3$$
Solution by Sreeraj P, M.Sc Physics