Light

Question 1

What is the law of reflection?

Answer 1

Angle of incidence = angle of reflection
Angle i = angle r
This apples to shiny surfaces i.e. Specular reflection

Question 2

What types of reflection are there?

Answer 2

Specular eg Mirror
Diffuse. Eg Paper

Diffuse reflection is also known as diffuse scattering

Question 3

What are the proper words for see through and not see through?

Answer 3

Transparent

Opaque

Question 4

What is the substance that light or sound travels through is called?

Answer 4

Medium

Question 5

Refraction is when …

Answer 5

Light bends as it crosses a boundary

Question 6

When light goes from a less dense medium to a more dense medium e.g air to glass, light bends …

Answer 6

Towards the normal

Question 7

When light goes from a more dense medium to a less dense medium e.g glass to air, light bends …

Answer 7

Away from the normal

Question 8

What happens when the incident light Ray hits glass at 90 degrees?

Answer 8

There is no refraction