Photon energy, Wave Frequency, and Wavelength are represented in the Electromagnetic spectrum. Thus, the correct option is A.
What is Wavelength?
Wavelength may be defined as the space between equivalent points (crests) in the contiguous cycles of a waveform movement propagated in space. It is represented as λ (lambda).
The wave frequency and wavelength are inversely related to one another, while photon energy is directly related to wave frequency, but inversely related to wavelength.
We study the association of all these terms in the unit of the electromagnetic spectrum.
Therefore, it is well described above.
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