Reflection And Fraction

Question 1

What does the law of reflection state

Answer 1

Angle of incidence equals angle of reflection

Question 2

What is the normal

Answer 2

An imaginary line at 90 degrees to the surface

Question 3

Specular reflection

Answer 3

Reflection from a smooth flat surface like a flat mirror.

Question 4

Diffuse reflection and what happens

Answer 4

Reflection on a rough surface. It forms reflected light scattering in all directions forming a distorted imagine of an object or none at all

Question 5

Refraction

Answer 5

The change in direction of a wave at such a boundary

Question 6

How does refraction work

Answer 6

The density of a material affects the speed a wave transmits through it: rhe denser the material the more slowly light travels through it. Glass is denser than air so a light ray passing into glass slows down and the ray meets at an angle to the normal so bends towards the normal