Science Buddies: "Ask an Expert"

what is the color of the emergent light
1. When red light passes through blue filter
2. when green light passes through red filter
3. when red light passes through magenta filter

Light reflecting from paper.
1. when white light strikes the green paper, in which color does the paper appear?
2. when red light strikes the red paper, in which color does the paper appear?
3. when blue light strikes the white paper, in which color does the paper appear?
4. when blue light strikes the red paper, in which color does the paper appear?
5. when blue light strikes the green paper, in which color does the paper appear?

Please help me as my concept is not clear regarding color filters and light reflection from different colored objects.

Hi shweta1,
Please take a look at the following interactive tool. I think that should help you with the color filtering concept.
http://www.physicsclassroom.com/Physics ... nteractive

If you want, please feel free to post your thinking behind what you think would happen and we can try to help.
Good Luck!
Willey