Q Search this document Page 3 of 3 100% O . . . 0, critical= to make light refract at 90. View answer and explanation V b) Using Snell's Law, see if you can come up with this value. Using the two indices of refraction and your angle of refraction of 90, solve for the angle of incidence Show your work: 0, critical= Part 5 Flip the media around. Set the incident (top) medium as air and the refracted (bottom) medium as glass. 1) Move your laser around to see what incident angle gives you a refracted angle of 90 degrees. What did you find out? What does this tell you about critical angles and indices of refraction