You take a picture of a rainbow with an infrared camera, and your friend takes a picture at the same time with visible light.
(a) Is the height of the rainbow in the infrared picture greater than, less than, or the same as the height of the rainbow in the visible-light picture?
(b) Choose the best explanation from among the following:
I. The height will be greater because the top of a rainbow is red, and so infrared light would be even higher.
II. The height will be less because infrared light is below the visible spectrum.
III. A rainbow is the same whether seen in visible light or infrared; therefore the height is the same.