engineering physics MCQ #357

The wavelength of a spectral line is given by 1 / λ = R (1 / n1² - 1 / n2²). What is the series limit for Lyman series?

engineering physics MCQ #357

  1. Question 1

    Q1. The wavelength of a spectral line is given by 1 / λ = R (1 / n1² - 1 / n2²). What is the series limit for Lyman series?

    • A) R
    • B) 1 / R
    • C) 4 / R
    • D) 9 / R

    Answer: R

    Explanation: For Lyman series, n1 = 1 and n2 = ∞, so 1 / λ = R (1 - 0) = R.