How does light travel if it passes through a less dense medium then dense medium?

• it will bend towards the normal

• it will bend away from the normal

• there will be no changes

• it will travel faster

light travels faster in?

• less optically dense medium

• optically dense medium

Snell’s Law refers to the relationship between the optical density of a material to the speed of light passing through it.

• True

• False

What causes refraction?

• The bending of light due to gravity.

• The change in the speed of light as it passes from one medium to another.

• The reflection of light off a smooth surface.

• The scattering of light by tiny particles in the atmosphere.

light travels faster in?

• high index of refraction

• low index of refraction

• high optical density

• low optical density

what is critical angle?

• The angle at which light completely stops traveling through a medium.

• The angle of incidence at which light is completely reflected within a medium.

• The angle at which light bends the most when entering a new medium.

• The angle of refraction when light enters a denser medium.

total internal reflection happens when?

• critical angle < angle of incidence

• critical angle > angle of incidence

• critical angle = angle of incidence

the value of c is 3x10^8 m/s^2

• True

• False

index of refraction does not have a unit of measurement

• True

• False