A thin converging lens is placed between an object and a screen whose positions are fixed. There...
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0A thin converging lens is placed between an object and a screen whose positions are fixed. There are two positions of the lens at which the sharp image of the object is formed on the screen. Find the transverse dimension of the object if at one position of the lens the image dimension equals \( h^{\prime}=2.0 \mathrm{~mm} \) and at the other, \( h^{\prime \prime}=4.5 \mathrm{~mm} \).
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