When a red rose flower is observed in blue light, what co...
When a red rose flower is observed in blue light, what colour does the observer see?
Red
Blue
Magenta
yellow
No correct option
Correct answer is E
The colour which an object presents to the eye is the colour of light it reflects. Red rose flower will therefore absorb any other colour and reflect red. Therefore when viewed in blue light, it has no colur to reflect and will therefore appear black. Although mixture of red light and blue light = magenta .