Part 1 a small lightbulb 24m from a concave mirror gives a, Ask an Expert

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Part 1. A small lightbulb 2.4m from a concave mirror gives a real image 6.8cm from the mirror. Find the mirror's focal length. Where will the image be if the bulb is moved to 3.9m from the mirror?

Part 2. A dentist's mirror produces an upright image of a tooth, magnified three times, If the dentist holds the mirror 2.0cm from the tooth to achieve this magnification, what's the mirror's focal length?

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Category:- Physics
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