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NEET 1994 (AIPMT) · Thermodynamic Processes

Thermodynamic Processes question from NEET 1994 (AIPMT)

Q253NEET 1994 · AIPMTMedium

Thermodynamic Processes

In an adiabatic change, the pressure and temperature of a monatomic gas are related as $P \propto T^{C}$ , where $C$ equals

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Answer: (d)

Adiabatic: $P^{1-\gamma}T^{\gamma} =$ constant, so $P \propto T^{\frac{\gamma}{\gamma-1}}$ .
Monatomic gas: $\gamma = \frac{5}{3}$ , so $C = \frac{5/3}{2/3} = \frac{5}{2}$ .
So the answer is (d) $\frac{5}{2}$ .

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