The efficiency of a Carnot engine is 0.5. What is the temperature of the cold reservoir if the hot reservoir is at 500K?
Q1. The efficiency of a Carnot engine is 0.5. What is the temperature of the cold reservoir if the hot reservoir is at 500K?
Answer: 250K
Explanation: Efficiency = 1 - (T_cold/T_hot). Given efficiency = 0.5 and T_hot = 500K, T_cold = 250K. Other options are incorrect temperatures.