Question: An object is situated at a known distance in front of a convex mirror whose focal length is also known. A friend of yours does

An object is situated at a known distance in front of a convex mirror whose focal length is also known. A friend of yours does a calculation that shows that the magnification is −2. After some thought, you conclude correctly that _______.

(a) your friend’s answer is correct

(b) The magnification should be +2

(d) The magnification should be −1/2

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