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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe efficiency of an ideal heat engine is less than 100% because of:
1. | the presence of friction. |
2. | the leakage of heat energy. |
3. | unavailability of the sink at zero kelvin. |
4. | All of these |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA 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. | \(380~\mathrm{K}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology