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Physics · KINETIC THEORY
हिन्दीThe given figure displays the variation of \( \frac{PV}{\mu T} \) versus pressure \( P \) for a real gas at three distinct temperatures \( T_1, T_2, \) and \( T_3 \). Which of the following relationships correctly describes the temperatures, and what is the limiting value of \( \frac{PV}{\mu T} \) as \( P \to 0 \)?
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Correct answer · Option C
\( T_1 > T_2 > T_3 \) and the limiting value is \( R \)
Explanation
As seen in Fig. 12.1, real gases approach ideal behaviour at higher temperatures (curve closer to ideal gas horizontal line), meaning \( T_1 > T_2 > T_3 \). As \( P \to 0 \), all curves converge to the ideal gas constant \( R \approx 8.314\text{ J mol}^{-1}\text{K}^{-1} \).
