Posted by **help?** on Saturday, May 24, 2008 at 1:13pm.

An object whose height is 3.5 cm is at a distance of 8.5 cm from a spherical concave mirror. Its image is real and has a height of 11.2 cm. Calculate the radius of curvature of the mirror.

How far from the mirror is it necessary to place the above object in order to have a virtual image with a height of 11.2 cm?

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