MDCAT Physics MCQ #334

The Doppler effect broadens spectral lines by causing

MDCAT Physics MCQ #334

  1. Question 1

    Q1. The Doppler effect broadens spectral lines by causing

    • A) Random thermal motion of atoms
    • B) Quantized emission frequencies
    • C) Photon interference
    • D) Electron spin flipping

    Answer: Random thermal motion of atoms

    Explanation: Thermal motion shifts wavelengths randomly; B fails as quantization ensures discrete lines.