Question

which object reflects light with the longest wavelength?
○ a yellow book
○ a violet flower
○ a blue paper
○ a green leaf

Explanation:

To determine which object reflects light with the longest wavelength, we use the visible light spectrum. The order of visible light wavelengths from longest to shortest is: red, orange, yellow, green, blue, indigo, violet. Among the options: yellow (from the yellow book) has a longer wavelength than green (green leaf), blue (blue paper), and violet (violet flower).

Answer:

a yellow book