Total Internal Reflection and Dispersion Quiz

What happens to light during total internal reflection?

• The angle of incidence is greater than the critical angle.

• The angle of reflection is the same as the critical angle.

• The angle of refraction is less than the critical angle.

• The angle of incidence is zero.

_____ cables transmit beams of light without allowing any of the light to escape until it gets to the end of the cable.

• Ethernet

• Fiber optic

• Armored

• Coaxial

When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,

• total internal reflection occurs.

• angle of refraction is equal to 90 degree.

• light is refracted out

• light travel in straight line

Chose the TWO conditions are NOT correct for total internal reflection to take place

• The incident angle should be less than the critical angle

• The incident angle should be greater than the critical angle

• Light should travel from a denser to a lighter medium

• Light should travel from a lighter to a denser medium

Which diagram correctly describes the critical angle c for air-water surface?

• A

• B

• C

• D

Light travels through a glass block as shown. Which angle is the critical angle for light in the glass?

• A

• B

• C

• D

The figure below is an optical phenomenon caused by the refraction of light. What is this effect called?

• Dispersion

• Mirage

• Rainbow

• Diffraction

see image

• A

• B

• C

• D

When the angle of refraction is 90 $\degree$  the angle of incidence is called the... 

• Angle of incidence

• Critical angle

• Angle of total internal reflection

• Angle of refraction

The critical angle is the angle of refraction in denser medium in which the angle of incidence in less dense medium is 90º.

• True

• False