engineering physics MCQ #333

The wavelength of the second line of the Balmer series is

engineering physics MCQ #333

  1. Question 1

    Q1. The wavelength of the second line of the Balmer series is

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

    Answer: 486.1 nm

    Explanation: Using Rydberg formula for n = 4 to n = 2 transition, 1 / λ = R * (1 / 2² - 1 / 4²), giving λ = 486.1 nm.