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AP EAMCET2010PhysicsThermodynamics

An ideal gas expands isothermally from volume V₁ to volume V₂ . It is then compressed to the original volume V₁ adiabatically. If p₁, p₂ and W represent the initial pressure, final pressure and the net work done by the gas respectively during the entire process, then

Options

  1. Ap₁>p₂, W=0
  2. Bp₁>p₂, W>0
  3. Cp₂>p₁, W>0
  4. Dp₂>p₁, W < 0

Correct answer

D. p₂>p₁, W < 0

Step-by-step solution

From graph it is clear that, p₂>p₁ . Since, area under adiabatic process (BCED) is greater than that of isothermal process ( A B D E) . Therefore, net work done W_A>W₁ W < 0 Hence option (d) is correct.

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