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Question: Answered & Verified by Expert
An ideal gas with heat capacity at constant volume $\mathrm{C}_{\mathrm{V}}$ undergoes a quasistatic process described by $\mathrm{PV}^{\alpha}$ in a P-V diagram, where $\alpha$ is a constant. The heat capacity of the gas during this process is given by-
PhysicsKinetic Theory of GasesKVPYKVPY 2010 (SB/SX)
Options:
  • A $\mathrm{Cv}$
  • B $\mathrm{Cv}+\mathrm{nR}$
  • C $\mathrm{C}_{\mathrm{V}}+\frac{\mathrm{nR}}{1-\alpha}$
  • D $\mathrm{C}_{\mathrm{V}}+\frac{\mathrm{nR}}{1-\alpha^{2}}$
Solution:
2694 Upvotes Verified Answer
The correct answer is: $\mathrm{C}_{\mathrm{V}}+\frac{\mathrm{nR}}{1-\alpha}$
Direct formula is to be used
$$
\mathrm{C}=\mathrm{Cv}+\frac{\mathrm{nR}}{1-\alpha}
$$

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