📝 Multiple Choice Question
General-science
An ideal heat engine operating between two temperatures T1 (source) and T2 (sink) has an efficiency expressed as:
A
1 - T1/T2
B
1 - T2/T1
C
T1/T2 - 1
D
T2/T1
Explanation
Carnot efficiency is e = 1 - (T_cold / T_hot) = 1 - (T2/T1), assuming temperatures are strictly in Kelvin.
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