engineering physics MCQ #329

The wavelength of the photon emitted when an electron jumps from n = 3 to n = 2 is

engineering physics MCQ #329

  1. Question 1

    Q1. The wavelength of the photon emitted when an electron jumps from n = 3 to n = 2 is

    • A) 656.3 nm
    • B) 434.1 nm
    • C) 410.2 nm
    • D) 486.1 nm

    Answer: 656.3 nm

    Explanation: Using Rydberg formula for n = 3 to n = 2 transition, 1 / λ = R * (1 / 2² - 1 / 3²), giving λ = 656.3 nm.