engineering physics MCQ #2795

The coefficient of performance of a refrigerator is 5. If the temperature inside the refrigerator is 250 K, the temperature outside is

engineering physics MCQ #2795

  1. Question 1

    Q1. The coefficient of performance of a refrigerator is 5. If the temperature inside the refrigerator is 250 K, the temperature outside is

    • A) 300 K
    • B) 320 K
    • C) 280 K
    • D) 310 K

    Answer: 300 K

    Explanation: COP = T_cold / (T_hot - T_cold), so 5 = 250 / (T_hot - 250), giving T_hot = 300 K.