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As a radio wave's frequency increases, what happens to its wavelength?

The wavelength gets shorter.

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  1. It gets longer
  2. It stays the same
  3. It gets shorter ✔

Why: Radio waves all travel at the speed of light. So when more waves pass each second, each one has to be shorter.

Huh, didn't know that: That is why 2 meters is a higher frequency band than 10 meters.

The dad joke
Why are high-frequency waves so short? They never have time to grow.
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References

Answer: It gets shorter. Radio waves all travel at the speed of light. So when more waves pass each second, each one has to be shorter.

  1. NIST: Time and Frequency from A to Z, U to W www.nist.gov/pml/time-and-frequency-division/popular-links/time-frequency-z/time-and-frequency-z-u-w
    The higher the frequency of the signal, the shorter the wavelength.
    Checked 2026-10-09.

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