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Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the
Answer & Solution
Correct Answer:
Option
C
Since Efficiency of a Carnot engine is $$\aleph = 1 - \frac{{{T_2}}}{{{T_1}}}$$
So, when the cold reservoir temperature is zero or when the hot reservoir temperature is infinity we can say that the efficiency is $$100\% .$$
But this is purely an impossible situation even under ideal conditions as given by second law of thermodynamics.
So, when the cold reservoir temperature is zero or when the hot reservoir temperature is infinity we can say that the efficiency is $$100\% .$$
But this is purely an impossible situation even under ideal conditions as given by second law of thermodynamics.
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