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What is the minimum distance between an object and its real image formed by a convex lens?
Wiki User
∙ 12y ago
Find the smallest distance between the object and a real image, when the focal distance of the lens is
2. Relevant equations
, where
is the distance of the object from the lens and
is the distance of the image.
3. The attempt at a solution
I'm not even sure, what I'm trying to do here, since the definition of a real and virtual image is a bit vague to me. But I've got something...
Let
be the desired distance. From the equation above we get
so
. Then
or
. We get the same for
, so the distance would be
Wiki User
∙ 12y ago
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