Question

Which color light has the highest frequency?

Answer 1

Wavelength:

1. As the wavelength decreases, so does the frequency, and as $E=hf$, where $h$ is constant (Planck's constant), so does the energy carried by the waves.
2. Short-wavelength waves have the most energy.
3. Red waves have a relatively long wavelength (around $700\mathrm{nm}$), whereas violet waves have a much shorter wavelength (roughly half that).
4. Violet waves carry the most energy because they have the shortest wavelength and the highest frequency in the visible light spectrum.