Multiple choice

In the human eye, cones possess their own characteristic photopigments that respond to a group of colours. Which of the following groups of colours represent the same?

  1. Red, green and white

  2. White, yellow and red

  3. Green, red and blue

  4. Red, blue and white

  5. Green, blue and black
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct. They respond to red, green and blue lights. The sensations of different colours are produced by various combinations of these cones and their photopigments. When these cones are stimulated equally, a sensation of white light is produced.

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