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Colour is most correctly described as

  • A.a perception arising in the observer rather than a property of an object
  • B.a physical property belonging to the surface of the object being viewed
  • C.a property of the light source and of nothing else whatever
  • D.a measurable quantity that exists independently of any observer

Answer: A

Correct answer: a perception arising in the observer rather than a property of an object

Colour requires three things at once: a light source, an object that modifies the light, and an observer to receive it. What the object possesses is a spectral reflectance curve, a physical property; what the observer experiences is colour. Remove any one of the three and there is no colour, which is why the same object can look different under different lights or to different people.

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