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AKJ1
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Homework Statement
A plane mirror is placed at the origin. A converging lens with a focal length of 5.00m is located at x=12.50m. A object is placed at x=22.5m
Find the final location of the image in terms of its X coordinate & magnification.
Homework Equations
1/q + 1/p = 1/f (lens)
1/q = -1/p (plane mirror; focal length is infinite)
q = image distance
p= object distance
The Attempt at a Solution
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So I first find the distance from the lens to the object (10m), then following from the equation
1/q + 1/p = 1/f
1/q +1/10 = 1/5
q = 10m
Now we consider the mirror. The image from the lens will serve as the object for the mirror.
1/q = -1/p
1/q = -1/10
q = -10m ?
However the answer says 20m. I just started studying geometric optics (I have yet to have a formal lecture on it), so I am likely missing something fundamental here. Is there another image somehow formed?
Thanks