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Which of the following statements is true? Group of answer choices The shortest wavelength of light is the visible light, which is the highest in energy. The shortest wavelength of light is the infrared ray, which is the highest in energy. The longest wavelength of light is the ultraviolet ray, which is the highest in energy. The shortest wavelength of light is the ultraviolet ray, which is the highest in energy. The longest wavelength of light is the infrared ray, which is the highest in energy.

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Answer: The shortest wavelength of light is the ultraviolet ray, which is the highest in Energy.

Explanation:

  • In the electromagnetic spectrum, we find the visible spectrum (roughly between 400 - 700 nm wavelength) between the ultraviolet (with wavelengths lower than visible) and the infrared (with wavelengths higher than visible, used by fiber optics in telecommunications).
  • As there is a relationship inversely proportional between wavelength and frequency (which is the inverse of the period), if the wavelength is shorter, the frequency is higher.
  • If the frequency is higher, this means that the light can change more quickly, which is a consequence of having more energy.
  • This is clearly showed in quantum theory by this expression for the energy of one photon:   E = hν, where h is the Planck Constant, and ν is the frequency of the photon.

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