Question

A rose appears red in white light. How will it appear in 

(i) green light, 

(ii) red light ? Give a reason for your answer for each.

Answer 1

(i) If a red rose is seen in green light, it appears black. The reason is that the rose absorbs the green light falling on it and reflect none. 

(ii) If a red rose is seen in red light, it appears bright red. This is because the rose reflects the red light falling on it and absorbs none of it.