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If a concave mirror has a focal length of 10 cm, find the two positions where an object can be placed to give, in each case,

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If a concave mirror has a focal length of 10 cm, find the two positions where an object can be placed to give, in each case, an image twice the height of the object.

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f = -10 cm

Case 1 : m = 2 (Image is virtual and erect)

Case 2 : m = 2 (Image is real and verted)

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