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NEET2012PhysicsThermodynamicsActual

An ideal gas goes from state A to state B via three different processes as indicated in the p-V diagram If Q₁, Q₂, Q₃ indicate the heat absorbed by the gas along the three processes and U₁, U₂, U₃ indicate the change in internal energy along the three processes respectively, then

Options

  1. AQ₁>Q₂>Q₃ and U₁= U₂= U₃
  2. BQ₃>Q₂>Q₁ and U₁= U₂= U₃
  3. CQ₁=Q₂=Q₃ and U₁> U₂> U₃
  4. DQ₃>Q₂>Q₁ and U₁> U₂> U₃

Correct answer

A. Q₁>Q₂>Q₃ and U₁= U₂= U₃

Step-by-step solution

For all process 1,2 and 3 array ll & U=U_B-U_A is same & U₁= U₂= U₃ Now, & Q= U+ W array Now, W= work done by the gas Q₁> Q₂> Q₃

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