To examine a particular blood sample in biology lab, a student uses a compound microscope set to have a magnification of -4510. The objective and eyepiece are both attached to a tube which is 16 cm in length and the eyepiece has a focal length of 2.6 cm. The near point of the person using the microscope is 25.5 and you can assume she can view the image produced with a fully relaxed eye.
1) What is the focal length of the objective?
2) What is the distance between the blood sample and the objective lens?