Question

If the ratio of specific heat of a gas at constant pressure
to that at constant volume is y, the change in internal
energy of a mass of gas, when the volume changes
from V to 2V at constant pressure P, is:


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Answer 1

Answer:

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=>Let the number of moles of gas taken is n So by ideal gas equation

=>PV=nRT As the volume changes from V to 2V. Where pressure P remaining Constant. We can say ∆V=V and P∆V=nR∆T =>PV=nR∆T

$\huge{A.T.Q}$

.=>(1), where ∆T represents the rise in temperature in absolute scale. Again change in internal energy ∆U=nCv∆T

=>.(2) =PV/(Cp/Cv-1)=PV/(¥-1), where Cp/Cv=¥.

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Answer 2

Answer:hope it helps!!

Explanation: