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27.A thin rod of length f/3 is placed along the optic axis of a concave mirror of focal length f such that the image which is real and elongated just touches the rod .what will be the magnification?

Answer» 27.A thin rod of length f/3 is placed along the optic axis of a concave mirror of focal length f such that the image which is real and elongated just touches the rod .what will be the magnification?


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