# Quiz 114: Reflection and refraction

1. Plot the data below on the graph provided.
2. Draw a linear best fit line through the data points on the graph.
3. ______________ Calculate the slope of the linear best fit line. The slope is the experimental index of refraction for the material.
4. ______________ The above material is reported to have a theoretic index of refraction of 1.33. What is the percentage error for the slope you calculated based against a theoretic value of 1.33?
5. __________________ When spear fishing in shallow water on the reef, does the experienced spear fisher aim above or below the fish that he sees in the water?
6. __________ By what percentage does an object underwater appear to a SCUBA diver?
7. What is an image?
8. _________________ Is the image inside a pinhole camera right-side-up or upside-down?
9. _________________ Is the image produced by a convex lens right-side-up or upside-down?
10. What is myopia?
11. What is presbyopia?
12. What is the typical treatment for presbyopia?

[$\text{slope m}=\frac{\left(\mathrm{y2}-\mathrm{y1}\right)}{\left(\mathrm{x2}-\mathrm{x1}\right)}$] [ $\Delta %=\frac{\left(\text{observed}-predicted\right)}{predicted}$ ]