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-   -   Physics and lights (https://www.askmehelpdesk.com/showthread.php?t=96275)

  • May 27, 2007, 07:04 PM
    sugarlips_golf
    Physics and lights
    Observed under cyan colored lights, you see a crayon that appears blue. What colors could the crayon be when observed under ordinary white lights? Choose all that apply.
    Black
    White
    Cyan
    Blue
    Green
    Magenta
    Red
    Yellow
    WHICH ONES WORK IM HAVING TROUBLE GETTING THE RIGHT ANSWER HELP
  • May 28, 2007, 02:17 AM
    Capuchin
    Okay, cyan light is blue and green, so the crayon only reflects the blue light here.

    The crayon could also reflect any amount of red light. So you are looking for colors that are blue mixed with red, or blue on its own.
  • May 31, 2007, 04:08 PM
    tucsonmac
    Any color that will reflect blue light and white which is the reflection of all colors. Blue, cyan, or magenta. These are the simplest colors.

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