Refraction and Critical Angle

Total Internal Reflection can only occur when light is traveling from a high index to a low index

• True

• False

If Total Internal Reflection occurs the light will bounce back at the same angle it came in

• True

• False

Cubic Zirconia has a lower critical angle than diamonds

• True

• False

Tags

NGSS.HS-PS4-5

If light hits at an angle larger than the critical angle it will refract and pass through the material

• True

• False

Light travels from glass (n=1.66) to water, what is the critical angle for these two mediums?

• 53.2

• 48.8

• 37

• not possible

Light travels from air to water (n=1.33), what is the critical angle?

• 48.8

• 46.4

• 52.4

• not possible

Light travels from oil (n=1.48) to water at an angle of 60 degrees relative to the normal. What will happen to the light?

• reflect back at an angle of 60 degrees

• refract through at an angle of 74.5 degrees

• refract through at an angle of 51.1 degrees

• reflect back at angle of 30 degrees

Refraction occurs when light changes mediums, but does not change speeds

• True

• False

The higher the index of refraction, the faster light travels in that medium

• True

• False

Tags

NGSS.HS-PS4-1

Light traveling from a higher index of refraction to a lower index of refraction will bend towards the normal (refract at a smaller angle)

• True

• False