A heat engine would have 100 percent efficiency if its input reservoir were

Question

Quizplus · Accepted Answer

According to the Carnot efficiency formula 1- (Tc/Th), where Tc is the temperature of the cold reservoir and Th is the temperature of the hot reservoir, the efficiency is maximum when Tc is zero (absolute zero). Therefore, even if the input reservoir is at a finite temperature, as long as the exhaust sink is at absolute zero, a heat engine can have 100 percent efficiency.

A Heat Engine Would Have 100 Percent Efficiency If Its