MDCAT Physics MCQ #3366

A gas expands isothermally. What happens to its internal energy?

MDCAT Physics MCQ #3366

  1. Question 1

    Q1. A gas expands isothermally. What happens to its internal energy?

    • A) Increases
    • B) Remains constant
    • C) Decreases
    • D) First increases then decreases

    Answer: Remains constant

    Explanation: Internal energy remains constant in isothermal expansion for ideal gases. Other options are incorrect as they imply energy change.