1. rank the index of refraction in each of the materials from highest to lowest. if two quantities are equal, denote they are equal with an equal sign. highestlowest 2. rank the speed of light in each of the materials from fastest to slowest. if two quantities are equal, denote they are equal with an equal sign. fastestslowest 3. water has an index of refraction of 1.33. what is the angle of refraction if a laser beam strikes the surface of the water at 30 degrees above the surface of the water? 4. the critical angle for a diamond surrounded by air is 24.4 degrees. what is the index of refraction for diamond?