Which of the following represents the highest frequency in the electromagnetic spectrum?

Gamma rays represent the highest frequency in the electromagnetic spectrum due to their extremely short wavelengths, which are on the order of picometers (trillionths of a meter). As frequency and wavelength are inversely related (higher frequency corresponds to shorter wavelength), gamma rays possess the highest frequency amongst all types of electromagnetic radiation.

Gamma rays are produced by nuclear reactions, certain types of radioactive decay, and astrophysical phenomena, making them a critical focus in fields such as astrophysics, nuclear medicine, and radiation therapy. Their high energy allows them to penetrate materials more effectively than other forms of electromagnetic radiation, which is particularly significant in medical applications and studying cosmic events. Gamma rays' characteristics distinguish them from other types of radiation, such as ultraviolet rays, infrared rays, and radio waves, which have progressively lower frequencies and longer wavelengths.