engineering physics MCQ #461

The wavelength of the radiation absorbed when an electron jumps from n = 2 to n = 4 is

engineering physics MCQ #461

  1. Question 1

    Q1. The wavelength of the radiation absorbed when an electron jumps from n = 2 to n = 4 is

    • A) 486 nm
    • B) 434 nm
    • C) 656 nm
    • D) 410 nm

    Answer: 486 nm

    Explanation: Using 1 / λ = R * (1 / 2² - 1 / 4²), gives λ = 486 nm.