A sample of ideal gas `(gamma=1.4)` is heated at constant pressure. If an amount of 100 J heat is supplied to the gas, the work done by the gas isA. 28.57 JB. 56.54 JC. 38.92 JD. 65.38 J

A sample of ideal gas `(gamma=1.4)` is heated at constant pressure. If

1.	A sample of ideal gas `(gamma=1.4)` is heated at constant pressure. If an amount of 100 J heat is supplied to the gas, the work done by the gas isA. 28.57 JB. 56.54 JC. 38.92 JD. 65.38 J
Answer» Correct Answer - A `dQ=n C_(p)dT` `dU=nC_(V)dT` `dW=dQ-dU=n(C_(p)-C_(V))dT` `(dW)/(dQ)=(nC+_(p))-(C_(V)dT)/(nC_(p)dT)=(C_(p))/(C_(p))-(C_(V))/(C_(P))` `(dW)/(100)=1-(C_(V))/(C_(p))=1-(1)(1.4)=(0.4)/(1.4)=(4)/(14)=(2)/(7)` `dW=100xx(2)(7)=28.57 J`

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A sample of ideal gas `(gamma=1.4)` is heated at constant pressure. If an amount of 100 J heat is supplied to the gas, the work done by the gas isA. 28.57 JB. 56.54 JC. 38.92 JD. 65.38 J

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