Multiple Choice
The efficiency of a Carnot cycle is 0.20 when operating with a hot reservoir of 93°C. If the temperature of the cold reservoir is maintained, the temperature of the hot reservoir necessary to double the efficiency is
A) 47°C.
B) 186°C.
C) 215°C.
D) 488°C.
Correct Answer:

Verified
Correct Answer:
Verified
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