engineering physics MCQ #308

The ratio of the wavelengths of the first members of Lyman and Balmer series is

engineering physics MCQ #308

  1. Question 1

    Q1. The ratio of the wavelengths of the first members of Lyman and Balmer series is

    • A) 1 : 4
    • B) 1 : 5
    • C) 5 : 27
    • D) 27 : 5

    Answer: 5 : 27

    Explanation: Using Rydberg's formula, we find λ_Lyman / λ_Balmer = (1 / 4 - 1 / 9) / (1 - 1 / 4) = 5 / 27.