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) $P_1 > P_2 > P_3$
Concept. At constant pressure $T = \dfrac{P}{nR}V$: the slope of a $T$–$V$ line is proportional to the pressure.
Step 1. Compare slopes. $P_1$ is steepest, then $P_2$, then $P_3$.
Answer. $P_1 > P_2 > P_3$ (Option B).
Solution by Sreeraj P, M.Sc Physics