engineering physics MCQ #452

The frequency of the photon emitted when an electron jumps from n = 3 to n = 2 is given by f = ΔE / h. What is f?

engineering physics MCQ #452

  1. Question 1

    Q1. The frequency of the photon emitted when an electron jumps from n = 3 to n = 2 is given by f = ΔE / h. What is f?

    • A) 4.57 * 10^14 Hz
    • B) 4.57 * 10^15 Hz
    • C) 6.17 * 10^14 Hz
    • D) 6.17 * 10^15 Hz

    Answer: 4.57 * 10^14 Hz

    Explanation: ΔE = 1.89 eV = 1.89 * 1.602 * 10^-19 J. f = ΔE / h = (1.89 * 1.602 * 10^-19) / (6.626 * 10^-34) = 4.57 * 10^14 Hz.