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A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it. Where is the image located ?

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Here, linear magnification, `m = - 3` (negative sign for real image, which is inverted)
Object distance, `u = -10 cm`, image distance, `v = ?`
As `m = (-v)/u, - 3 = (-v)/(-10), v = - 30 cm`
The image is located at `30 cm` in front of the mirror.

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