What is ultra violets frengency?

Ultraviolet (UV) radiation is part of the electromagnetic spectrum and has a wavelength range of approximately 10 nanometers to 400 nanometers. It falls between visible light and X-rays. UV radiation is categorized into three types: UVA (320-400 nm), UVB (290-320 nm), and UVC (100-290 nm), with each type having different effects on biological organisms and varying levels of energy.