engineering physics MCQ #589

The wavelength of a spectral line is given by 1 / λ = R * (1 / n1² - 1 / n2²). For the second line of Balmer series, what are n1 and n2?

engineering physics MCQ #589

  1. Question 1

    Q1. The wavelength of a spectral line is given by 1 / λ = R * (1 / n1² - 1 / n2²). For the second line of Balmer series, what are n1 and n2?

    • A) n1 = 2, n2 = 4
    • B) n1 = 1, n2 = 3
    • C) n1 = 2, n2 = 3
    • D) n1 = 2, n2 = 5

    Answer: n1 = 2, n2 = 4

    Explanation: For Balmer series, n1 = 2. The second line corresponds to n2 = 4.