# College Physics : Electromagnetic Spectrum

## Example Questions

### Example Question #1 : Electromagnetic Spectrum

An x-ray machine emits electromagnetic photons carrying a frequency of . What is the approximate energy carried by each photon?

Possible Answers:

Correct answer:

Explanation:

The energy of a photon of a given frequency is determined by the equation

, where  is Plank's constant

So plug in Plank's constant and the frequency of the x-ray photons to get an energy of very near

### Incompatible Browser

Please upgrade or download one of the following browsers to use Instant Tutoring: