Question

what are spectrum ranges of UV rays​

Answer 1

Spectrum Ranges of UV RAYS:

UV rays are classified into three groups depending on the wavelength range as follows:

• UV - A rays: (315 - 400 nm)
• UV - B rays: (280 - 315 nm)
• UV - C rays: (100 - 280 nm)

Discovered by:

• Johann Wilhelm Ritter in year 1801

Uses of UV rays:

• Killing Bacteria (used in aqua-guards).
• Phototherapy
• Purification of waterLamps (called UV lamps)
• Sterilisation and disinfection

$\star$ Hope It Helps.