Which type of radiation has the shortest wavelength?

3. Ultraviolet.

Among offered types of radiation, ultraviolet has the shortest wavelength.

Listed by wavelength, from shortest to longest:

1. Ultraviolet

Electromagnetic radiation at wavelengths shorter than the violet end of visible light (10 nm to 400 nm); the atmosphere of the Earth effectively blocks the transmission of most ultraviolet light.

2. Visible light

Electromagnetic radiation at wavelengths which the human eye can see. We perceive this radiation as colors ranging from red (longer wavelengths; ~ 700 nanometers) to violet (shorter wavelengths; ~400 nanometers.)

3. Infrared

Electromagnetic radiation at wavelengths longer than the red end of visible light and shorter than microwaves (roughly between 1 and 100 microns). Almost none of the infrared portion of the electromagnetic spectrum can reach the surface of the Earth, although some portions can be observed by high-altitude aircraft (such as the Kuiper Observatory) or telescopes on high mountaintops (such as the peak of Mauna Kea in Hawaii).

4. Microwaves

Electromagnetic radiation which has a longer wavelength (between 1 mm and 30 cm) than visible light. Microwaves can be used to study the Universe, communicate with satellites in Earth orbit, and cook popcorn.

Shortest wave length = maximum freq. Of the given possibilities ultraviolet is the only. Now, as to maximum capacity i might say the ultraviolet additionally using capacity it takes to vibrate at those severe freqs and the quantity of capacity which may be transfered via such frequencies.