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## Homework Statement

The eyepiece of a compound microscope has a focal length of 2.50 cm and the objective has a focal length of 1.8 cm. The two lenses are separated by 22 cm. The microscope is used by a person with normal eyes (near point at 25 cm). What is the angular magnification of the microscope?

## Homework Equations

M = (25)(s'1)/( (f1)(f2) )

## The Attempt at a Solution

So I understand that the 25 comes from the near point of the eye for a human. However, with f1 defined as the focal length for the objective lens (1.8 cm) and f2 defined as the focal point for the eyepiece (2.50 cm), I don't know how to calculate the location of the image since I don't know the location of the object. Can anyone clarify this for me? Thank you in advance.