MDCAT Physics MCQ #3411

A Carnot engine operates between 800K and 400K. What is its efficiency?

MDCAT Physics MCQ #3411

  1. Question 1

    Q1. A Carnot engine operates between 800K and 400K. What is its efficiency?

    • A) 25%
    • B) 50%
    • C) 75%
    • D) 100%

    Answer: 50%

    Explanation: Efficiency = 1 - (T_cold/T_hot) = 1 - (400/800) = 0.5 or 50%. Other options are wrong temperatures or calculations.