engineering physics MCQ #505

The ratio of the radii of the first three orbits of hydrogen atom is

engineering physics MCQ #505

  1. Question 1

    Q1. The ratio of the radii of the first three orbits of hydrogen atom is

    • A) 1 : 4 : 9
    • B) 1 : 2 : 3
    • C) 1 : 3 : 5
    • D) 1 : 8 : 27

    Answer: 1 : 4 : 9

    Explanation: The radius of the nth orbit is proportional to n², so the ratio is 1² : 2² : 3² = 1 : 4 : 9.