If the magnification of an image formed by a mirror is positive, what does it mean?
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It means that both the object and the image formed by a spherical mirror (concave or convex) are erect (I.e., upright). An erect image is always virtual. Thus, positive magnification indicates that the image formed by a spherical mirror is virtual.
Linear magnification (m): Linear magnification produced by a mirror is the ratio of the size of the image formed (denoted by h') to the ratio of the size of the object.
Linear magnification (m): Linear magnification produced by a mirror is the ratio of the size of the image formed (denoted by h') to the ratio of the size of the object.
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