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Cyan is described as minus red because it

  • A.reflects only the red part of the spectrum back to the eye
  • B.emits red light when illuminated by white light
  • C.is produced by adding red to a white surface
  • D.absorbs the red part of the spectrum and reflects the rest

Answer: D

Its reflectance is high in the green and blue and low in the red. Magenta and yellow are minus green and minus blue by the same reasoning. Each reflects two thirds of the spectrum. Naming them minus red and so on is exact.

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