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Importance of Some Special Colors

Color or colour (see spelling differences) is the visual perceptual property corresponding in humans to the categories called red, green, blue, and others.Color derives from the spectrum of light (distribution of light power versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors.Answer the following questions about the events,issues,things related to colors.

Importance of Some Special Colors
  • 1 of 6:

    In football, a referee shows _____ card to indicate that player has been ofically cautioned.

  • A) Green
  • B) Purple
  • C) Yellow
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