Refraction

Refraction is

• the bouncing of light

• the bending of light

• the interference of light

• caused by light changing amplitude

The speed of light in glass

• is faster that the spped of light in air

• is slower that the speed of light in air

• is the same as the speed of light in air

• is the speed of light, duh, 3 x 10⁸ m/s

As light goes from air to glass

• it bends toward the "normal"

• it bends away from the normal

• what's a normal?

• it does not bend

Actually, it is possible for light NOT to bend as it goes from one medium to another. At what angle of incidence does this happen?

• the critical angle

• 90 degrees

• 0 degrees

• about 45 degrees

As light goes from a more dense to a less dense medium

• it bends toward the normal

• it bends away from the normal

• it does not bend

• it bends at the critical angle

As light goes from a more dense to less dense medium, as the angle of incidence increases, the amount of light that is reflected at the surface

• increases

• decreases

• aren't we talking about refraction?

• does not change

Total Internal Reflection happens

• when going from less dense to more dense medium

• when going from more dense to less dense medium

• when going from air to glass

• how did reflection get in this quiz again?

A prism can bend white light twice, resulting in the separation of light into the visible spectrum. Which color is bent the most

• red

• green

• blue

• they all bend the same amount

When going from more dense to a less dense medium, if the angle of incidence of a light ray exceeds the critical angle, the refracted ray

• bends down along the normal

• goes straight

• reflects back to where it came from

• dissappears

Which color of the visible spectrum is the lowest energy, and moves the fastest going through glass?

• They all move at the same speed!

• Blue

• Green

• Red