Please do not source solutions from the internet, those aren't correct.

2. What is "Infinity Corrected Optical System? Draw (i) a ray diagram locating an object with a certain 'height' and (ii) an abbreviated ray diagram depicting the object and image locations and ray traces created from a point light source. Make sure to denote (a) the names of each lens, (b) the locations of focal planes of each lens, and (c) the exact locations of the object and the images. Finally, describe why this is a popular choice for metallurgical microscope.