Which type of wave has the highest frequency?

Gamma rays have the highest frequency among the options listed. This is due to the electromagnetic spectrum, where frequency is inversely related to wavelength. Gamma rays are on the extreme end of the spectrum, with extremely short wavelengths, which correspond to very high frequencies.

In comparison, X-rays have high frequencies as well, but they are not as high as those of gamma rays. Ultraviolet (UV) light has lower frequencies than both X-rays and gamma rays, while infrared radiation has an even lower frequency. The order of frequency from highest to lowest in this context is gamma rays, X-rays, UV, and then infrared. This hierarchy is crucial in understanding the properties and behaviors of these different types of waves, especially in fields such as medical imaging and radiation safety.