A flashlight beam strikes the surface of a panel of glass (n :1.56) at a 67-degreeangle to the normal. What is the angle of refraction? (b) A diver shines a flashlight upward from beneath then water at a 35.2" angle to the vertical. At what angle does the light leave the water? c.) The critical angle for light going from an unknown liquid into airis 47.2. What is the index of refraction of the liquid?