engineering physics MCQ #460

The velocity of the electron in the first Bohr orbit is 2.2 * 10^6 m/s. What is the velocity in the 3rd orbit?

engineering physics MCQ #460

  1. Question 1

    Q1. The velocity of the electron in the first Bohr orbit is 2.2 * 10^6 m/s. What is the velocity in the 3rd orbit?

    • A) 7.33 * 10^5 m/s
    • B) 2.2 * 10^6 m/s
    • C) 6.6 * 10^6 m/s
    • D) 1.1 * 10^6 m/s

    Answer: 7.33 * 10^5 m/s

    Explanation: Using vn = v1 / n, for n = 3, v3 = 2.2 * 10^6 / 3 = 7.33 * 10^5 m/s.