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For an ideal gas, starting from state point $1$, two different processes take place. The corresponding final states in these two processes are $2$ and $3$, lying on same isotherm. If $P$ and $h$ represent pressure and enthalpy, respectively, then which one of the following options is correct?

  1. $h_{2}=h_{3}$
  2. $h_{2}>h_{3}$
  3. $P_{2} h_{3}=P_{3} h_{2}$
  4. $P_{3} h_{3}=P_{2} h_{2}$

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