The change in the entropy of a $1$ mole of an ideal gas which went through an isothermal process from an initial state $(P_1, V_1,T)$ to the final state $(P_2, V_2,T)$ is equal to
  • A
    zero
  • B$R\, lnT$
  • C$R\, ln\frac{V_1}{V_2}$
  • D$R\, ln\frac{V_2}{V_1}$
AIIMS 2010, Medium
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