A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absolute value |f|=40 cm. The image of object produced by the mirror is of height 25 cm and has the same orientation of the object. One may conclude from the information:

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Accepted Answer

(1) Image is virtual, opposite side of convex mirror.. Same orientation: erect, so m>0 and the image is virtual. m=1/4<1: diminished. Only a convex mirror gives an erect diminished image. A virtual image of a mirror lies behind it, on the opposite side from the object.

A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absolute value |f|=40 cm. The image of object produced by the mirror is of height 25 cm and has the same orientation of the object. One may conclude from the information:

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