engineering physics MCQ #493

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

engineering physics MCQ #493

  1. Question 1

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

    • A) 6.17 x 10¹⁴ Hz
    • B) 4.57 x 10¹⁴ Hz
    • C) 3.08 x 10¹⁴ Hz
    • D) 2.06 x 10¹⁴ Hz

    Answer: 6.17 x 10¹⁴ Hz

    Explanation: Using the Bohr model energy formula and E = hf, ΔE = 2.55 eV, f = ΔE / h = 6.17 x 10¹⁴ Hz.