Each of the following figures depict an apple illuminated by a powerful white light projector (to simplify, the white light can be considered as composed only of the three primary colours: red, green and blue), and by a dim light coming from a bulb of one of the primary colours. Each apple is represented by the colour seen when both the projector and the bulb are switched on, but what happens when the projector is turned off and the apple is illuminated only by the colour light bulb?
This additive mixing chart is included for your convenience, if you deem necessary to use it. We cannot tell you if you really need it or not, but we have found that on numerous occasions some people asked us about it, so we include it in case anyone need it.

 

Example

What colour will the apple look once the white light lamp is turned off?

      White
      Blue
      Red
      Green
      Yellow
      The apple is no longer seen

Answer: GREEN. It will be seen still as green, because it will illuminated by the white light bulb and nothing changes when you turn off the white lamp.

Answer now the following nine questions.