Q. A compound absorbs light in the wavelength region . Its complementary colour is

 2858  189 EAMCETEAMCET 2013 Report Error

Solution:

When a compound absorbs a certain wavelength (i.e., ) from the visible light which corresponds to the blue-green light in the visible spectrum, the colour or light transmitted by it does not contain the colour of absorbed radiation and thus shows the complementary colour, i.e., red.