engineering physics MCQ #439

The energy of the photon emitted when an electron jumps from n = 4 to n = 1 is

engineering physics MCQ #439

  1. Question 1

    Q1. The energy of the photon emitted when an electron jumps from n = 4 to n = 1 is

    • A) 12.75 eV
    • B) 12.09 eV
    • C) 10.2 eV
    • D) 13.6 eV

    Answer: 12.75 eV

    Explanation: ΔE = E4 - E1 = (-0.85) - (-13.6) = 12.75 eV.