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An ideal gas undergoes a clockwise cyclic process consisting of three steps. The states of the gas at the vertices of the cycle on a P-V diagram are (V₀, 2P₀) , (3V₀, 2P₀) , and (V₀, P₀) . What is the ratio of the work done by the gas during the isobaric expansion segment to the net work done by the gas in the entire cycle?

Options

  1. A4
  2. B1 4
  3. C2
  4. D1

Correct answer

A. 4

Step-by-step solution

The cyclic process forms a right-angled triangle on the P-V diagram. The isobaric expansion occurs at a constant pressure of 2P₀ from volume V₀ to 3V₀ . Work done during this expansion, W_ exp = P V = 2P₀(3V₀ - V₀) = 4P₀V₀ . The net work done in the clockwise cycle is the area of the triangle enclosed on the P-V diagram. Base of the triangle (change in volume) = 3V₀ - V₀ = 2V₀ . Height of the triangle (change in pressure) = 2P₀ - P₀ = P₀ . Net work, W_ net = 1 2 base height = 1 2 2V₀ P₀ = P₀V₀ . The required ratio

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