engineering physics MCQ #447

The velocity of the electron in the nth orbit of hydrogen atom is given by v_n = 2.19 * 10^6 / n m/s. The velocity of the 2nd orbit is

engineering physics MCQ #447

  1. Question 1

    Q1. The velocity of the electron in the nth orbit of hydrogen atom is given by v_n = 2.19 * 10^6 / n m/s. The velocity of the 2nd orbit is

    • A) 1.095 * 10^6 m/s
    • B) 2.19 * 10^6 m/s
    • C) 4.38 * 10^6 m/s
    • D) 0.547 * 10^6 m/s

    Answer: 1.095 * 10^6 m/s

    Explanation: Substitute n = 2 in v_n = 2.19 * 10^6 / n m/s to get v_2 = 2.19 * 10^6 / 2 = 1.095 * 10^6 m/s.