physics

calculate the image positions and magnifications for an object 3cm tall and a mirror of focal length +12 with the object at the following positions: 2.5 f, 2.0 f, 1.5 f, 0.5 f.

please help me don't understand it at all.
it would be best if you can explain it to me rather than just giving the answer! thnx

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  1. help me pleaseee, i don't get it!!!

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  2. sorry, optics is not my thing at all :(

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  3. aww okay but thanks anyways

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