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The height of an object kept 12 cm away from a concave mirror is 1 cm. Calculate the magnification if an image

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The height of an object kept 12 cm away from a concave mirror is 1 cm. Calculate the magnification if an image of height 2.5 cm is formed in front of the mirror.

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m = \(\frac{h_i}{h_o}\) = \(\frac{2.5\,cm}{1\,cm}\) = -2.5

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