engineering physics MCQ #551

The energy required to remove an electron from n = 1 to n = ∞ is 13.6 eV. What is the energy required to remove an electron from n = 2 to n = ∞?

engineering physics MCQ #551

  1. Question 1

    Q1. The energy required to remove an electron from n = 1 to n = ∞ is 13.6 eV. What is the energy required to remove an electron from n = 2 to n = ∞?

    • A) 3.4 eV
    • B) 6.8 eV
    • C) 10.2 eV
    • D) 13.6 eV

    Answer: 3.4 eV

    Explanation: Energy required = E∞ - E2 = 0 - (-3.4) = 3.4 eV, using En = -13.6 / n² eV.