1. If a ray of light passes through ethanol (n = 1. 36) at an angle of 60°, find the index of refraction if the light is refracted a an angle of 55°. 2. If a ray of light from the air would point toward a small pond of water (n = 1. 33) at 60°, find the angle of refraction. 3. If a ray of light from an n = 0. 7 would point toward a material of n = 1. 5 at 45°, find the angle of refraction.