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NEET 1997 (AIPMT) · Heat Engines, Refrigerators & Second Law

Heat Engines, Refrigerators & Second Law question from NEET 1997 (AIPMT)

Q94NEET 1997 · AIPMTEasy

Heat Engines, Refrigerators & Second Law

The efficiency of a Carnot engine operating with reservoir temperature of 100∘C100^\circ\text{C} and −23∘C-23^\circ\text{C} will be

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Answer: (b)

  1. T1=100+273=373T_1 = 100 + 273 = 373 K, T2=−23+273=250T_2 = -23 + 273 = 250 K
  2. η=T1−T2T1=373−250373\eta = \frac{T_1 - T_2}{T_1} = \frac{373 - 250}{373}
  3. So the answer is (b).
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