engineering physics MCQ #347

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

engineering physics MCQ #347

  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: ΔE = E4 - E2 = (-0.85) - (-3.4) = 2.55 eV.