engineering physics MCQ #509

The frequency of a spectral line is given by f = (E2 - E1) / h. What is the frequency of the photon emitted when an electron jumps from n = 2 to n = 1?

engineering physics MCQ #509

  1. Question 1

    Q1. The frequency of a spectral line is given by f = (E2 - E1) / h. What is the frequency of the photon emitted when an electron jumps from n = 2 to n = 1?

    • A) 2.46 * 10^15 Hz
    • B) 1.23 * 10^15 Hz
    • C) 4.92 * 10^15 Hz
    • D) 3.69 * 10^15 Hz

    Answer: 2.46 * 10^15 Hz

    Explanation: Calculate E2 and E1, then use f = (E2 - E1) / h, where h = 6.626 * 10^-34 Js.