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JEE Main202430 Jan 2024Morning ShiftPhysicsKinetic Theory of GasesActual

Two thermodynamical process are shown in the figure. The molar heat capacity for process A and B are C A and C B . The molar heat capacity at constant pressure and constant volume are represented by C P and C V , respectively. Choose the correct statement.

Options

  1. AC P > C B > C V
  2. BC A = 0 and C B = ∞
  3. CC P > C V > C A = C B
  4. DC A > C P > C V

Correct answer

A. C P > C B > C V

Step-by-step solution

For process A : log P = γ log V ⇒ P = V γ , ( γ > 1 ) P V - γ = Constant C A = C V + R 1 + γ … i Likewise, for process B → P V - 1 = Constant C B = C v + R 1 + 1 C B = C v + R 2 … ii Also, C P = C v + R … iii By ii and iii , we get C P > C B > C v

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