Problem: A jeweler examines a diamond with a magnifying glass. If the near-point distance of the jeweler is 20.7cm, and the focal length of the magnifying glass is 7.50 cm. Assume the magnifying glass is directly in front of the jeweler's eyes.
A- Find the angular magnification when the diamond is held 5.71cm from the magnifying glass.
M=
Please use as much detail as required in your solution. Thanks.