engineering physics MCQ #504

The wavelength of the first line of Paschen series is

engineering physics MCQ #504

  1. Question 1

    Q1. The wavelength of the first line of Paschen series is

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

    Answer: 1094 nm

    Explanation: Use 1 / λ = R (1 / 3² - 1 / 4²) to calculate the wavelength of the first line of Paschen series.