The magnification of a concave mirror is m = -0.67 for an object at a distance d = 2.1 m in front of the mirror. What is the focal length of this mirror?
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We know the magnification formula for a mirror is: $m = -\frac{d_i}{d_o}$, where $m$ is the magnification, $d_i$ is the image distance, and $d_o$ is the object distance. Show more…
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