A gas of given mass at a pressure of 1 0 5 N m − 2 expands isothermally until its volume is doubled and then adiabatically until its volume is again doubled. Find the final pressure of the gas. ( γ =

Question

A gas of given mass at a pressure of 1 0 5 N m − 2 expands isothermally until its volume is doubled and then adiabatically until its volume is again doubled. Find the final pressure of the gas. ( γ = 1.4 )

TestHub · Accepted Answer

After the isothermal step P = 0.5 × 1 0 5 Pa. Adiabatic doubling of volume: P f ​ = 0.5 × 1 0 5 × 2 − 1.4 = 0.5 × 1 0 5 × 0.3789 = 1.89 × 1 0 4 Pa.

Physics - Heat & Thermo Question with Solution | TestHub

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