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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediumnumerical

A gas is expanded to three times its volume, once isobarically and once isothermally, from the same initial state. Find the ratio of the work done in the isobaric expansion to that in the isothermal expansion (two decimals).

Answer:

1.82

Solution:

Isobaric: $W = P (3 V_{0} - V_{0}) = 2 n R T_{0}$ . Isothermal: $W = n R T_{0} ln 3 = 1.0986 n R T_{0}$ . Ratio = $\frac{2}{ln 3} = 1.82$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases

⏱ 2mℹ️ Source: QB

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