1. A magnifying glass with a focal length 5 mm is used to view a bug by a person who is smallest distance of distinct vision is 25 cm. If this person holds this magnifying glass close to his/her eye, what is the best position of the object?
2. Supposedly we designed a compound microscopic imaging system that has an objective producing lateral magnification of 40x. What focal length eyepiece will produce an overall magnification of 200x?