engineering physics MCQ #491

The wavelength of the photon emitted when an electron jumps from n = 4 to n = 3 is

engineering physics MCQ #491

  1. Question 1

    Q1. The wavelength of the photon emitted when an electron jumps from n = 4 to n = 3 is

    • A) 1875 nm
    • B) 1282 nm
    • C) 1094 nm
    • D) 820 nm

    Answer: 1875 nm

    Explanation: Using the Rydberg formula: 1/λ = R (1/3² - 1/4²), λ = 1875 nm.