Multiple choice general knowledge science & technology

which type of electromagnetic waves has slightly longer wavelengths than redlight

  1. yellow

  2. infrared

  3. green

  4. ultraviolet
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Infrared waves have longer wavelengths than visible red light. The visible spectrum ranges from approximately 380nm (violet) to 750nm (red). Infrared radiation starts just beyond red light (~700nm-1mm) and has longer wavelengths. Yellow and green have shorter wavelengths than red (~570-590nm for yellow, ~495-570nm for green), while ultraviolet has shorter wavelengths than the entire visible spectrum (~10-400nm).

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