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NEET 2014 (AIPMT) · P-V Diagrams & Cyclic Processes

P-V Diagrams & Cyclic Processes question from NEET 2014 (AIPMT)

Q73NEET 2014 · AIPMTMedium

P-V Diagrams & Cyclic Processes

A thermodynamic system undergoes cyclic process ABCDA as shown in figure. The work done by the system in the cycle is

Figure

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Answer: (d)

  1. The cycle forms two triangles meeting at (1.5V0,2P0)(1.5V_0, 2P_0).
  2. Upper loop and lower loop each have area 12(V0)(P0)=P0V02\frac{1}{2}(V_0)(P_0) = \frac{P_0V_0}{2}.
  3. One loop is traced clockwise and the other anticlockwise, so their works cancel.
  4. So the answer is (d) zero.
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