Spectrum Order

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Correct increasing wavelength order: X-rays, Visible, Radio is:

RankGuru · Accepted Answer

The EM spectrum is ordered by wavelength ($\lambda$) or frequency ($f$). From highest energy (shortest $\lambda$) to lowest energy (longest $\lambda$):
1. **X-rays**: $\sim 0.01-10 	ext{ nm}$
2. **Visible**: $\sim 400-700 	ext{ nm}$
3. **Radio Waves**: $\sim 1 	ext{ mm} - 100 	ext{ km}$
Thus, the increasing order of wavelength is X-rays $<$ Visible $<$ Radio.

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Spectrum Order

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