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  1. The efficiency of a Carnot engine operating between the temperatures of 100°C and –23°C will be​​
    1. 100 + 23
      100
    2. 100 - 23
      100
    3. 373 + 250
      373
    4. 373 - 250
      373
Correct Option: C

η = 1 -
T1
T2

T1 = –23°C = 250 K ,   T2 = 100°C = 373K
η = 1 -
250
 =
373 - 250
373373


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