engineering physics MCQ #332

The energy of the photon emitted when an electron jumps from n = 4 to n = 2 is

engineering physics MCQ #332

  1. Question 1

    Q1. The energy of the photon emitted when an electron jumps from n = 4 to n = 2 is

    • A) 2.55 eV
    • B) 1.89 eV
    • C) 3.4 eV
    • D) 4.09 eV

    Answer: 2.55 eV

    Explanation: Using ΔE = 13.6 * (1 / 2² - 1 / 4²), we get ΔE = 2.55 eV.