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For a Carnot engine operating between T_h = 600 K and T_c = 300 K, efficiency is:

A75%
B25%
C50%
D100%
Answer & Solution
Correct answer: C. 50%
Carnot efficiency = 1 - T_c/T_h = 1 - 300/600 = 1/2 = 50%.
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