A photon with a frequency of 1.2 * 10¹⁵ Hz has what energy? A) 8.0 * 10^-19 B) 1.0 * 10^-19 C) 8.0 * 10¹⁹ D) 5.5 * 10^-19 E) 5.5 * 10⁴⁹

Question

Quizplus · Accepted Answer

The energy of a photon can be calculated using the formula E = hf, where h is Planck's constant (6.626 x 10^-34 J·s) and f is the frequency of the photon. Given the frequency of 1.2 x 10^15 Hz, the energy E = (6.626 x 10^-34 J·s)(1.2 x 10^15 Hz) = 7.9512 x 10^-19 J, which rounds to 8.0 x 10^-19 J, matching choice A.

A Photon with a Frequency of 1