Multiple choice

Rays w/ short wavelenghts that are the least penetrating, produce chemical effects,& kill germs

  1. blue light

  2. infrared rays

  3. unltraviolet rays

  4. red light rays
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ultraviolet rays have the shortest wavelengths in this context, are least penetrating due to absorption by surface layers, cause chemical reactions like vitamin D synthesis, and possess germicidal properties.

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