2.) a) Draw a ray diagram for the following situation involving a converging lens. The ray tracing needs to have the three principal rays. Also, draw the image on the ray diagram where the three principal rays converge. Refer to Section 26.4 of Serway & Jewett for further guidance on how to construct principal rays. b) Use a ruler to measure the object distances, image distances, and focal lengths for the ray diagram. Then, verify that your measurements are correct with the thin-lens equation. Object Far from Lens far / object near f mina lene that has a focal length of 20 cm.