Barbara places an object in front of a mirror. The mirror produces an image that is inverted, real, and smaller than the object.Which kind(s) of mirror could Barbara be using?

A concave mirror can produce an inverted, real image when the object is beyond the mirror’s focal point; the image can also be smaller than the object. Plane mirrors produce upright virtual images, and convex mirrors always produce upright, virtual, smaller images. Therefore, the mirror must be concave, as choice B states.

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