If we shine green light on a tree, the tree will:

Correct answer: (c) Appear the same as before

Explanation

An object looks the colour of the light it reflects. Leaves contain chlorophyll, which absorbs mainly red and blue light and reflects green light. That is why a tree looks green in white sunlight.

In green light, the leaves still reflect the green light falling on them, so the tree still looks green, the same as before. A red flower in green light, by contrast, would look dark, because it absorbs green light and has no red light to reflect.