MDCAT Chemistry MCQ #771

Calculate the energy of a photon with a wavelength of 400 nm.

MDCAT Chemistry MCQ #771

  1. Question 1

    Q1. Calculate the energy of a photon with a wavelength of 400 nm.

    • A) 3.1 eV
    • B) 2.48 eV
    • C) 4.1 eV
    • D) 1.55 eV

    Answer: 3.1 eV

    Explanation: E = hc/λ, E = 3.1 eV. Option B is for λ=500 nm.