40Hr Laser Hair Removal Apprentice In Training Practice Test

Which term describes energy composed of one wavelength?

Coherent energy Collimated energy Monochromatic energy Fluence

Correct Answer:

Monochromatic energy

Explanation:

Monochromatic energy describes energy composed of a single wavelength. The prefix “mono-” means one, and “chromatic” relates to color or wavelength, so monochromatic light has essentially one spectral line. This is what laser light is often described as, since it has a very narrow range of wavelengths. Other terms describe different properties: coherent energy refers to a fixed phase relationship between waves, which is about timing and wavefronts rather than spectral content; collimated energy means the beam travels in parallel directions with little divergence; fluence is the amount of energy per unit area, not about the wavelengths present.

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