Multiple choice

Bacteria that cause skin infections can be killed by:

  1. infrared light

  2. ultraviolet light

  3. fluorescent light

  4. incandescent light

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ultraviolet (UV) light has germicidal properties and is used to kill bacteria on surfaces or skin. Infrared light is primarily used for its heating effects.