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sona1177

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## Homework Statement

A microscope has an eyepiece of focal length 2.50 cm and an objective of focal length 4.60 cm. The eyepiece produces a virtual image at the viewer's near point (25.0 cm from the eye).

a) How far from the eyepiece is the image formed by the objective? ANswer: 2.27 cm -This is correct :)

b) If the lenses are 21.0 cm apart, what is the distance from the objective lens to the object being viewed ANswer: 6.10 cm. This is correct :)

c) What is the angular magnification? Answer: -33.3 This is WRONG :(

Here is what I did:

L=(Distance between lens) - (objective focal length) - (eye piece focal length)

so,

L= 21.0-4.60 - 2.50

L=13.9

I know that M=-LN/(objective focal length * object distance from eye piece)

So plugging in L=13.9

N=25

Fo=4.60

pe=2.27 i get -33.3 and not -33.8