Which sequence correctly arranges electromagnetic waves in order of strictly decreasing frequency (highest frequency to lowest frequency)?
Answer and explanation
Correct answer: B. gamma rays, ultraviolet rays, infrared radiation, radio waves
- Step 1: Electromagnetic spectrum ordered by decreasing frequency (increasing wavelength): Gamma rays > X-rays > Ultraviolet > Visible > Infrared > Microwaves > Radio waves. Step 2. The first sequence correctly follows this hierarchy. Answer: gamma rays, ultraviolet rays, infrared radiation, radio waves. Why not the others: Radio to gamma is increasing frequency; ultraviolet does not have higher frequency than gamma rays; infrared has lower frequency than ultraviolet.
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