engineering physics MCQ #365

The wavelength of the series limit of Paschen series is

engineering physics MCQ #365

  1. Question 1

    Q1. The wavelength of the series limit of Paschen series is

    • A) 820 nm
    • B) 8200 nm
    • C) 82000 nm
    • D) 8.2 nm

    Answer: 820 nm

    Explanation: For Paschen series, n1 = 3 and n2 = ∞, so 1 / λ = R (1 / 9), then λ = 9 / R = 820 nm.