A beam of light passing through a flint glass is incident on water. The index of refraction of water is 1.33 and the index of refraction of flint glass is 1.62. a. What is the critical angle of light that passes from the flint glass to water? b. What happens to the path of light if the angle of incidence is 60º? c. What happens to the value of the critical angle if the flint glass is replaced by a diamond? The index of refraction of diamond is 2.42.