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JEE Main 2023 (24 Jan, Shift 2) · Thermodynamic Processes

Thermodynamic Processes question from JEE Main 2023 (24 Jan, Shift 2)

Q140JEE Main 2023 · 24 JAN · SHIFT 2Easy

Thermodynamic Processes

In an Isothermal change, the change in pressure and volume of a gas can be represented for three different temperatures; $T_3 > T_2 > T_1$ as:

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Answer: (b)

Isothermal: $PV = nRT$ = constant, so each curve is a rectangular hyperbola (not a straight line).
At the same $V$ , higher $T$ gives higher $P$ , so the higher-temperature curve lies farther from the origin.
Order outward: $T_1$ , $T_2$ , $T_3$ .
So the answer is (b).

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