engineering physics MCQ #385

The ratio of the energies of the first two excited states of hydrogen atom is

engineering physics MCQ #385

  1. Question 1

    Q1. The ratio of the energies of the first two excited states of hydrogen atom is

    • A) 4/9
    • B) 9/4
    • C) 16/9
    • D) 9/16

    Answer: 4/9

    Explanation: Using En = -13.6 / n² eV, E2 = -3.4 eV and E3 = -1.51 eV, ratio is E2/E3 = 4/9 (in magnitude).