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JEE Main202312 Apr 2023Morning ShiftPhysicsThermodynamicsActual

An engine operating between the boiling and freezing points of water will have A. Efficiency more than 27 % . B. Efficiency less than the efficiency of a Carnot engine operating between the same two temperatures. C. Efficiency equal to 27 % . D. Efficiency less than 27 % . Choose the correct answer from the options given below

Options

  1. AB, C and D only
  2. BA and B only
  3. CB and D only
  4. DB and C only

Correct answer

C. B and D only

Step-by-step solution

The efficiency of Carnot engine can be calculated as follows: η C = 1 - 273 373 × 100 % = 26 . 8 % Hence, the efficiency of the engine is given by η engine < η carnot .

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