Which electromagnetic wave has the shortest wavelength?

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Gamma rays are indeed the electromagnetic waves with the shortest wavelength in the electromagnetic spectrum. Wavelength is inversely related to frequency and energy; shorter wavelengths correspond to higher frequencies and higher energy levels. Gamma rays possess extremely high energy, making them capable of penetrating matter more than other types of electromagnetic radiation.

The electromagnetic spectrum ranges from radio waves, with the longest wavelengths, to gamma rays, which have the shortest. In this range, infrared waves have wavelengths longer than visible light, and visible light itself has longer wavelengths than ultraviolet waves. Therefore, when considering all types of electromagnetic waves, gamma rays stand out due to their short wavelengths and high energy, distinguishing them from the other options listed.