We know leaf looks green in daylight . Chlorophyll present in leaf absorbs all the colours of light spectrum but reflects green . Hence leaf looks green to our eye .
Now let us change the source of light . Now leaf is in dark room under a red light . Now without any prior thinking , if we look at leaf , what colour it has ?
??????
??????
Leaf looks BLACK !
Why is it so ?
Let me explain . If it is under daylight , it just reflects the green light wavelength of light spectrum . Not others .
Now the source of light itself is red light . Remember , leaf only reflects green light and absorbs all the other colours .
This time also , leaf absorbed red light . Since no green light wavelength is available in present light spectrum , it has nothing to reflect .
Hence , leaf would look black.
Now let us change the source of light . Now leaf is in dark room under a red light . Now without any prior thinking , if we look at leaf , what colour it has ?
??????
??????
Leaf looks BLACK !
Why is it so ?
Let me explain . If it is under daylight , it just reflects the green light wavelength of light spectrum . Not others .
Now the source of light itself is red light . Remember , leaf only reflects green light and absorbs all the other colours .
This time also , leaf absorbed red light . Since no green light wavelength is available in present light spectrum , it has nothing to reflect .
Hence , leaf would look black.
