Multiple choice

Which of the following waves in the electromagnetic spectrum has the longest wavelength?

  1. Gamma waves

  2. Infrared waves

  3. Radio waves

  4. Visible light waves
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the electromagnetic spectrum, wavelength and frequency are inversely related. Radio waves have the lowest frequency and energy, which corresponds to having the longest wavelength among the choices listed.

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