AP Physics 2hardmcq1 pt
A heat engine operates between a hot reservoir at 600 K and a cold reservoir at 300 K. What is its maximum theoretical efficiency?
A.25%
B.50%
C.75%
D.100%
Explanation
Core Concept
Maximum (Carnot) efficiency = 1 - T_cold/T_hot = 1 - 300/600 = 0.50 = 50%.
Correct Answer
B50%
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