The efficiency of an ideal Carnot engine operating between two temperatures T1 (source) and T2 (sink) is given by:

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The thermal efficiency (η) of a reversible Carnot engine depends exclusively on the absolute temperatures of the hot source (T1) and the cold sink (T2). The formula is η = 1 - (T2/T1), or (T1 - T2) / T1. Temperatures must be in Kelvin. It shows no engine can be 100% efficient unless the sink is at absolute zero.

The efficiency of an ideal Carnot engine operating between two temperatures T1 (source) and T2 (sink) is given by: MCQ with Answer and Explanation

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