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MHT CET202620 April 2026Evening ShiftPhysicsThermodynamicsActual

The efficiency of Carnot engine which operates between the two temperatures T₁ = 500 K and T₂ = 300 K is

Options

  1. A75 %
  2. B50 %
  3. C25 %
  4. D40 %

Correct answer

D. 40 %

Step-by-step solution

The efficiency of a Carnot engine is given by the formula: = 1 - T₂ T₁ Given the source temperature T₁ = 500 K and the sink temperature T₂ = 300 K, substituting these values into the formula gives: = 1 - 300 500 = 1 - 3 5 = 2 5 = 0.4 To express the efficiency as a percentage, multiply by 100 % : = 0.4 100 % = 40 % Answer: 40 %

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