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The graph of magnification v\/s image distance of a thin lens is given its focal length will be-\\[\\begin{align} A.~~~~~~~~~~~~~f=-\\dfrac{a}{c} \\\\ B.~~~~~~~~~~~~~f=\\dfrac{b}{c} \\\\ C.~~~~~~~~~~~~~f=-\\dfrac{c}{b} \\\\ D.~~~~~~~~~~~~None\\text ...
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The relation between focal length F magnification m and image distance v of a spherical mirror of small aperture is given by
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Solved The graph shows magnification versus the position of | Chegg.com
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Macro photography: Understanding magnification: Digital Photography Review
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