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MHT CET Medical202624 April 2026Evening ShiftPhysicsThermodynamicsActual

The work done by an ideal gas during closed cycle 1 2 3 4 1 as shown in figure is

Options

  1. AP₀ V₀
  2. B2P₀ V₀
  3. C3P₀ V₀
  4. D4P₀ V₀

Correct answer

C. 3P₀ V₀

Step-by-step solution

The total work done by the gas is the algebraic sum of the work done in the two separate loops shown in the P-V diagram. From the indicated arrows, the lower loop is traversed in a clockwise direction. Thus, the work done in this loop is positive and equal to the area of the lower triangle. W₁ = + 1 2 base height = + 1 2 (5V₀ - V₀) (3P₀ - P₀) W₁ = 1 2 4V₀ 2P₀ = 4P₀V₀ The upper loop is traversed in a counter-clockwise direction. Thus, the work done in this loop is negative and equal to the negative of the area of th

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