engineering physics MCQ #330

The frequency of the photon emitted when an electron jumps from n = 2 to n = 1 is

engineering physics MCQ #330

  1. Question 1

    Q1. The frequency of the photon emitted when an electron jumps from n = 2 to n = 1 is

    • A) 2.47 x 10¹⁵ Hz
    • B) 1.23 x 10¹⁵ Hz
    • C) 3.29 x 10¹⁵ Hz
    • D) 4.57 x 10¹⁵ Hz

    Answer: 2.47 x 10¹⁵ Hz

    Explanation: Using ΔE = hf and ΔE = 13.6 * (1 / 1² - 1 / 2²), we get f = 2.47 x 10¹⁵ Hz.