A Carnot engine whose sink is at \(300~\mathrm{K}\) has an efficiency of \(40\)%. By how much should the temperature of the source be increased to increase its efficiency by \(50\)% of its original efficiency?

1. \(275~\mathrm{K}\) 2. \(325~\mathrm{K}\)
3. \(250~\mathrm{K}\) 4. \(380~\mathrm{K}\)
Subtopic:  Carnot Engine |
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