A leaf which contains only green pigments, is illuminated by a laser light of wave length 0.6328 $μ$ m. It wound appear to be:

Brown

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Black

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Red

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Green

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Solution

The correct option is C Black
0.6328 $μ m$ = $6328 ˚ A$
This is wavelength of red colour. So, this light will be absorbed by green pigments.
The leaf will appear black.

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