Answer to Question #162614 in Optics for Taniform Shekinah Glory

Question #162614

The distance between an object and its upright image is 20.0cm. If the magnification is 0.50, what is the focal length of the lens being used to form the image?

Expert's answer

Magnification

"M=\\frac{f}{f-u}\\\\0.50=\\frac{f}{f-20.0}\\\\f=-20cm"

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