1. A ray of light goes from air into a new material. The incident angle is 36o and the refracted angle is 28o. a. What is the index of refraction? b. What is the speed of light in the material? c. Using the table of indices in the online book, what material might this be?

2. A ray of light enters water at an angle of 55o. What is the refracted angle if nwater=1.333?

3. a. What is the critical angle for water? b. Explain a situation where this would become a noticeable effect.