What is the range of wavelengths that UV rays fall within?

Ultraviolet (UV) rays are a form of electromagnetic radiation that fall within a specific range of wavelengths. The correct range for UV rays is indeed from 100 to 400 nanometers. This range is significant because it encompasses different types of UV radiation: UV-A (320 to 400 nm), UV-B (280 to 320 nm), and UV-C (100 to 280 nm), each having distinct effects, especially in relation to biological processes and health.

Understanding the wavelength range is crucial in fields such as microbiology and mortuary science, particularly since UV light can effectively kill bacteria and other pathogens. The UV-C range is often used for sterilization purposes due to its effectiveness in damaging the DNA of microorganisms, thus preventing their reproduction.

The other wavelength ranges listed do not represent the characteristics of UV radiation, as they either fall below or above the established UV spectrum. Hence, recognizing the correct range is essential for applications in health, safety, and environmental studies.