A jeweler's lens of focal length 9.4 cm is used as a magnifier. With the lens held near the eye, determine the following.
(a) What is the angular magnification when the object is at the focal point of the lens?
(b) What is the angular magnification when the image formed by the lens is at the near point of the eye (25 cm)?
(c) What is the object distance giving the maximum magnification?