thanks, so I tried this again using the ratio you gave above, but it still isn't coming out right, here's what I did:
m=-(25/1.622)(25/.93)=-414.3298463
height of the image=(1.43e-3)(25cm)=.03575
height of the object=(.03575) / (-414.3298463) = -.86283912e-6 meters
why is this incorrect?
Homework Statement
A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.30 mm. With the length of the barrel set at 25.0 cm, the diameter of a red blood cell's image subtends an angle of 1.43 mrad with the eye. If the final image distance...