An ideal gas expands isothermally from a volume ${V_1}$ to ${V_2}$ and then compressed to original volume ${V_1}$adiabatically. Initial pressure is ${P_1}$ and final pressure is ${P_3}$. The total work done is $W$. Then
  • A${P_3} > {P_1},\,\,W > 0$
  • B${P_3} < {P_1},\,\,W < 0$
  • C${P_3} > {P_1},\,\,W < 0$
  • D${P_3} = {P_1},\,\,W = 0$
IIT 2004, Medium
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