Question

Snell's law can be used to solve for the index of refraction of a medium if the _____ is known.

• angle of incidence

• angle of refraction

• index of refraction of the other medium

• All of the above

. Total internal reflection occurs when the angle of incidence is _____ the critical angle.

• greater than

• equal to

• greater than or equal to

• None of the above

When the slope of a graph is the index of refraction for a material and light is refracted from air into that material, the vertical axis of the graph is _____.

• the sine of the angle of incidence

• the angle of incidence

• the sine of the angle of refraction

• None of the above

Answer 1

1. All of the above. (Note- Snell's law needs all the variables)
2. greater than.( Note- when incidence angle is increased beyond critical angle light ray completely reflects)
3. the sine of the angle of incidence. ( Note- snell's law, sin($\theta$_incidence ) = n × sin ( $\theta$ refraction ) )