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A dye imparts red colour on fabric . What colour of light was absorbed by the dye ?

$(a)\;Blue\qquad(b)\;Red\qquad(c)\;Green\qquad(d)\;Orange$

1 Answer

Answer : Green
Explanation :
Green is complementary for colour of red .
When organic molecules are exposed to radiations in the visible region, they may absorb a certain portion of visible light. If a certain portion of the light is absorbed and the rest is reflected, the substance has the colour of the reflected light. All dyes absorb a certain portion of visible light since they are organic compounds. The colour of light reflected which is complementary to the colour absorbed, imparts colour to the dye.
answered Mar 17, 2014 by yamini.v
edited Mar 26 by sharmaaparna1
 
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