The colors in a rainbow are caused by(a) the interaction of the light reflected from differentraindrops.(b) different amounts of absorption for light of differentcolors by the water in the raindrops.(c) different amounts of refraction for light of differentcolors by the water in the raindrops.(d) the downward motion of the raindrops.

When a cut diamond is illuminated with white light, it sparkles brilliantly with a spectrum of vivid colors. These distinctive visual features are a result of (i) light traveling much slower in diamond than in air; (ii) light of different colors traveling at different speeds in diamond; (iii) diamond absorbing light of certain colors; (iv) both (i) and (ii); (v) all of (i), (ii), and (iii).

Why is light sometimes modeled explained as a particle and sometimes as a wave?

Fiber optic cables, such as those used for high speed communication (Internet & phone services), transmit signals as light pulses through transparent cables. When viewed from one of the ends, you can see these light pulses, but when viewed from the side you can't. Why does this happen?