MDCAT Physics MCQ #313

What physical principle explains the Doppler width in atomic spectra?

MDCAT Physics MCQ #313

  1. Question 1

    Q1. What physical principle explains the Doppler width in atomic spectra?

    • A) Thermal motion causing random velocity shifts.
    • B) Collisions altering energy levels during emission.
    • C) Quantum tunneling through potential barriers.
    • D) Photon recoil during emission events.

    Answer: Thermal motion causing random velocity shifts.

    Explanation: Doppler broadening occurs due to thermal velocity distributions. Option B describes collisional broadening instead.