G10 SW 2.4 Refraction of Light

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

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

The diagram shows a ray of light going from medium A into medium B. Which one of the following statements cannot be correct?

• A is air and B is glass.

• A is water and B is vacuum.

• A is water and B is air.

• A is glass and B is vacuum.

A ray of light is shone on a rectangular glass block as shown. Identify A, B and C.

• A = Refracted ray, B = Incident ray, C = Normal

• A = Incident ray, B = Refracted ray, C = Normal

• A = Normal, B = Refracted ray, C = Incident ray

• A = Refracted ray, B = Angle of incidence, C = Angle of refraction