Help in Refraction?

Question

1. Describe what happens to a ray of light as it travels from air into a more dense material, then back into air.
2. In which substance, water or the sold block, do you think light travels faster? What evidence to support the answer?
3. How does the anglie of incidence in air compare to the angle of emergence in air?

Answer 1

1.When a ray of light travels from air into a more dense material, the ray bends towards the normal and when it goes back nto air it bends away from the normal.

2.Light travels fastest in air or vacuum folowed by water or solid block.This is because as density increases,speed decreases.

3.The anglie of incidence in air is equal to the angle of emergence in air

Answer 2

1. a normal line is an imaginary line perpendicular to the material. when the ray enters the dense material, it bends towards the normal, and when it leaves, it bends away from the normal.
2. water. light cant travel through a solid block.
3. same