engineering physics MCQ #403

The energy of the nth orbit is given by En = -13.6 / n² eV. The energy of the 5th orbit is

engineering physics MCQ #403

  1. Question 1

    Q1. The energy of the nth orbit is given by En = -13.6 / n² eV. The energy of the 5th orbit is

    • A) -0.544 eV
    • B) -2.72 eV
    • C) -0.272 eV
    • D) -1.36 eV

    Answer: -0.544 eV

    Explanation: Substitute n = 5 in the given formula: En = -13.6 / 5² = -13.6 / 25 = -0.544 eV.