this is the link and reference to the bending light simulator needed to answer the questions: https://phet.colorado.edu/sims/html/bending-light/latest/bending-light_en.html

this is how your screen should look:

Make sure the Show Normal box is clicked, giving the dotted line perpendicular to the boundary between the two mediums. The default setting for the light ray to go from air to water. At this stage, don't worry about the Index of Refraction. Now drag the circular protractor and place it so that the 0 mark is in line with the normal and the 90 mark is at the medium boundary: O Ray O Ware Material Air 30 30 Index of Refraction () 1.00 60 60 Wartor 90 90 Material Water 60 60. Index of Refraction (n) 1.33 30 Water Normal Bending Light Into More Tools PHET =