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KCET2010PhysicsThermodynamics

The efficiency of Carnot's heat engine is 0.5 when the temperature of the source is T ₁ and that of sink is T ₂ . The efficiency of another Carnot's heat engine is also 0.5. The temperatures of source and sink of the second engine are respectively

Options

  1. A2 ~T ₁, 2 ~T ₂
  2. B2 ~T ₁, T ₂ 2
  3. CT ₁+5, ~T ₂-5
  4. DT ₁+10, ~T ₂-10

Correct answer

A. 2 ~T ₁, 2 ~T ₂

Step-by-step solution

Efficiency of Carnot's heat engine, =1- T ₂ ~T ₁ Efficiency remains same when both T ₁ and T ₂ are increased by same factor.

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