engineering physics MCQ #569

The frequency of the radiation emitted when an electron jumps from n = 4 to n = 3 is

engineering physics MCQ #569

  1. Question 1

    Q1. The frequency of the radiation emitted when an electron jumps from n = 4 to n = 3 is

    • A) 1.6 * 10¹⁴ Hz
    • B) 3.2 * 10¹⁴ Hz
    • C) 5.4 * 10¹⁴ Hz
    • D) 1.89 * 10¹⁴ Hz

    Answer: 1.6 * 10¹⁴ Hz

    Explanation: Using ΔE = hf and ΔE = -13.6 * (1/9 - 1/16), f = ΔE / h = 1.6 * 10¹⁴ Hz.