engineering physics MCQ #506

The longest wavelength in the Lyman series is

engineering physics MCQ #506

  1. Question 1

    Q1. The longest wavelength in the Lyman series is

    • A) 121.6 nm
    • B) 102.6 nm
    • C) 91.2 nm
    • D) 1 / R

    Answer: 121.6 nm

    Explanation: The longest wavelength corresponds to the transition from n = 2 to n = 1. Use 1 / λ = R (1 / 1² - 1 / 2²).