Question 1: How is the angle of reflection related to the angle of incidence? In this part of the lab, vou will measure an angle of incidence by lining up two pins in front of a reflecting surface. The line from one pin to the other defines the direction of incidence. Line up a third pin so that it coincides with the reflected images of two pins already lined up and thus lies along the direction of a ray going from Pin 1 to Pin 2 and into the mirror. By marking the location of the reflecting surface and the thres pins, you will be able to trace the path that aray of light would follow, from which you can then measure the angles of incidence and reflection. Procedure 1. Look at the mirror level with the tabletop. Sight along the line of the two pins. 2. While looking along the line of sight of the first two pins, bring a third pin into view so that you see its reflection in the mirror. Move this pin until its reflection lines up with the first two pins and stick it in the paper. 3. Repeat Step 2 with a fourth pin. 4. Remove the pins. Then draw straight lines connecting the first two pinholes with the surface of the mirror (incidence line) and the third and fourth pinholes with the mirror (reflection line). 5. Follow the rest of the steps in the Laboratory Instructions: Optics 1.Pins acrylicIn this part of the lab, you will use a technique similar to that used with the mirror to measure the angles of incidence and refraction. Two pins can be lined up in front of the flat side of the hemicylindrical disk to define the angle of incidence to a flat surface. By looking from the opposite curved part of the disk, you can find the angle from which the pins appear lined up and therefore the angle that refracted rays from the pins followed through the disk. Applying Snell's law allows you to calculate the index of refraction: n sine; = n-sine\f(Score for Question 1: ____ of 10 points) 1. Based on Part 1, how does the angle of incidence relate to the angle of reflection? Explain it using your data. Write a statement or law of reflection describing this relationship. Answer: Type your answer here. Click or tap here to enter text. (Score for Question 2: ____ of 10 points) 2. What value did you calculate for the index of refraction of the acrylic block in Part 27 How does your value compare to the accepted value of 1.507 Calculate the percentage error. Different materials have distinct indexes of refraction. Explain how you might identify a material based on experiments like this one. Mention at least one of the difficulties in identifying materials based on their indexes of refraction. Answer: Type yvour answer here. Click or tap here to enter text. (Score for Question 3: ____ of 5 points) 3. Light coming from a fish makes an incidence angle of 30 to normal under the water. The index of refraction of water is 1.33. A fisherman is looking at the fish through air. At what angle with the normal {8, ) will the fish appear to the fisherman? Use Snell's law: n; sing, = n_sing, Answer: Tyvpe vour answer here. Click or tap here to enter text