A) a ray of light travels from air to glass, making an angle of incidence of 25^o. Calculate the angle of refraction in glass. The refractive index of glass = 1.52

B) Calculate the critical angle for light traveling from glass (n = 1.52) to air.

C) A ray of light travels from glass (n = 1.52) and hits glass-air boundary at 55^o angle. Does the ray refract in to air? Or does it reflect back to glass (total internal reflection)? If refracts in to air, give the angle of refraction. If reflects back to glass, give the angle of reflection.

D) If a ray of light is sent from air to glass (n = 1.52) can it undergo total internal reflection? Explain your answer.