AP Physics 2mediummcq1 pt
A heat engine operates between a hot reservoir at 600 K and a cold reservoir at 300 K. What is the maximum theoretical efficiency of this engine?
A.B) 50%
B.A) 25%
C.D) 100%
D.C) 75%
Explanation
Core Concept
The maximum theoretical efficiency of a heat engine is given by the Carnot efficiency: η = 1 - Tcold/Tₕot. Substituting the given temperatures: η = 1 - 300K/600K = 1 - 0.5 = 0.5 or 50%.
Correct Answer
AB) 50%
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