MDCAT Physics MCQ #3405

A heat engine operates between 500K and 300K. What is its maximum possible efficiency?

MDCAT Physics MCQ #3405

  1. Question 1

    Q1. A heat engine operates between 500K and 300K. What is its maximum possible efficiency?

    • A) 20%
    • B) 40%
    • C) 60%
    • D) 80%

    Answer: 40%

    Explanation: Efficiency = 1 - (T_cold/T_hot) = 1 - (300/500) = 0.4 or 40%. Other options are incorrect temperatures or calculations.