Physics · Kinetic Theory of Gases

NEET (UG) 2024 — Question 39

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:

Option A:
$P_{3}>P_{2}>P_{1}$
Option B:
$P_{1}>P_{3}>P_{2}$
Option C:
$P_{2}>P_{1}>P_{3}$
Option D:
$P_{1}>P_{2}>P_{3}$
Correct

Answer: D

Step-by-step solution

At same temperature, curve with higher volume corresponds to lower pressure. $P \propto \frac{1}{V}$

$V_{3}>V_{2}>V_{1}$

$\Rightarrow P_{1}>P_{2}>P_{3}$

(We draw a straight line parallel to volume axis to get this)

Answer key and solution verified before publishing.

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Exam: NEET (UG) 2024
Paper: 2024 paper
Subject: Physics
Chapter: Kinetic Theory of Gases
Topic: Energy of Gas and Gas Laws and Miscellaneous Problems