A microscope has an eyepiece that gives an angular magnification of 5.25 cm for a final image at infinity and an objective lens of focal length 1.45 cm. The tube length is 16.1 cm.
a - What is the transverse magnification due to the objective lens alone?
b - what is the angular magnification due to the microscope?
c - how far from the objective should the object be placed?
M transverse = -I/f obj.
M eyepiece = N/f eyepiece
d of image = tube length - f eyepiece
The Attempt at a Solution
I correctly got -11.5 for a and -60.5 for b. I am having trouble with c!
I used d image = 16.7 - 25/5.25 = 11.94
then (1/d image) + (1/d object) = 1/f obj
1/11.94 + 1/d obj = 1/1.45
I get d obj = 1.65 THIS IS WRONG - answer is 1.58 Please help.