engineering physics MCQ #420

The energy of the photon emitted when an electron jumps from n = 4 to n = 3 is

engineering physics MCQ #420

  1. Question 1

    Q1. The energy of the photon emitted when an electron jumps from n = 4 to n = 3 is

    • A) 0.66 eV
    • B) 1.89 eV
    • C) 0.85 eV
    • D) 1.51 eV

    Answer: 0.66 eV

    Explanation: ΔE = -13.6 * (1/4² - 1/3²) = 0.66 eV.