The distance between the lenses of a microscope is 18 cm. The focal length of the eyepiece is 1.8 cm. If the microscope is to produce an angular magnification of -260 when used by a person with a normal near point (20 cm from the eye), what must the focal length of the objective be?
2 answers
Neill
He gave us this in lecture:
L = 0.18m
Fe = 0.018m
M = -260
N = 0.2m
Fo = ?
M = (-N/Fe)(L-Fe/Fo)
Subbed in and I ended up with 6.92x10^-3 m
L = 0.18m
Fe = 0.018m
M = -260
N = 0.2m
Fo = ?
M = (-N/Fe)(L-Fe/Fo)
Subbed in and I ended up with 6.92x10^-3 m
1 answer