MDCAT Physics MCQ #343

Which transition emits a photon with the least energy?

MDCAT Physics MCQ #343

  1. Question 1

    Q1. Which transition emits a photon with the least energy?

    • A) n=3 → n=2
    • B) n=2 → n=1
    • C) n=4 → n=1
    • D) n=5 → n=2

    Answer: n=3 → n=2

    Explanation: Smaller energy gaps emit lower energy photons; B fails as n=2→n=1 is violet (higher energy).