MDCAT Physics MCQ #355

Which of the following types of radiation is responsible for the ionization of atoms in the interstellar medium?

MDCAT Physics MCQ #355

  1. Question 1

    Q1. Which of the following types of radiation is responsible for the ionization of atoms in the interstellar medium?

    • A) Ultraviolet radiation
    • B) X-ray radiation
    • C) Gamma radiation
    • D) Cosmic rays

    Answer: Ultraviolet radiation

    Explanation: Ultraviolet radiation is energetic enough to ionize atoms, but less energetic than X-rays.