engineering physics MCQ #486

The frequency of the photon emitted when an electron jumps from n = 3 to n = 1 is

engineering physics MCQ #486

  1. Question 1

    Q1. The frequency of the photon emitted when an electron jumps from n = 3 to n = 1 is

    • A) 2.92 x 10¹⁵ Hz
    • B) 2.46 x 10¹⁵ Hz
    • C) 1.89 x 10¹⁵ Hz
    • D) 1.46 x 10¹⁵ Hz

    Answer: 2.46 x 10¹⁵ Hz

    Explanation: Using the Bohr model energy formula and E = hf, ΔE = 13.6 (1 - 1/9) = 12.09 eV, f = ΔE / h = 2.46 x 10¹⁵ Hz.