What is the energy of a photon whose frequency is 2.9 × 10²⁰ Hz? (h = 6.63 × 10−³⁴ J⋅s and 1 eV = 1.60 × 10−¹⁹ J) A)0.2 MeV B)1.2 MeV C)1.9 MeV D)3.1 MeV E)0.8 MeV

Question

Quizplus · Accepted Answer

The energy of a photon is given by E = hf, where h is Planck's constant and f is the frequency. Substituting the given values, E = (6.63 × 10^-34 J⋅s)(2.9 × 10^20 Hz) = 1.9227 × 10^-13 J. Converting this to MeV using 1 eV = 1.60 × 10^-19 J, we get E ≈ 1.2 MeV.

What Is the Energy of a Photon Whose Frequency Is