MDCAT Physics MCQ #3382

The second law of thermodynamics implies that

MDCAT Physics MCQ #3382

  1. Question 1

    Q1. The second law of thermodynamics implies that

    • A) Heat can flow from cold to hot spontaneously
    • B) Perpetual motion machines of the second kind are possible
    • C) The total entropy of an isolated system can never decrease
    • D) The efficiency of a heat engine can be 100%

    Answer: The total entropy of an isolated system can never decrease

    Explanation: The second law states that total entropy of an isolated system always increases or remains constant. Other options violate the second law.