An X-ray photon has an energy of 3.3 * 10¹⁵ J and Planck's constant is 6.6 * 10^-34 J·s.The frequency that corresponds to this energy is A)3.3 * 10^-50 Hz. B)3 * 10^-19 Hz. C)3.3 * 10¹⁸ Hz. D)3.3 * 10²⁰ Hz.

Question

Quizplus · Accepted Answer

We can use the equation E = hf to find the frequency (f) that corresponds to the given energy (E), where h is Planck's constant.

f = E/h
  = (3.3 x 10^15 J)/(6.6 x 10^-34 J·s)
  = 3.3 x 10^29 Hz

Since the options are given in scientific notation, we can see that the closest value to our calculated frequency is 3.3 x 10^18 Hz, which is answer choice C.

An X-Ray Photon Has an Energy of 3