Question

Which example best illustrates that light behaves like particles?

Light bends as it strikes a window.
Light bounces off a white cement sidewalk.
Light travels in space at a speed of about 3.0 x 108 m/s.
Light increases in speed as it moves through matter.

Answer 1

B - Light bounces off a white cement sidewalk.

Answer 2

Light bounces off a white cement sidewalk.

Particles generally can't pass through matter. All the other options show light moving through matter, except the space one. I don't think the space one is correct because particles normally don't move that fast.