Magnification in a Convex Lens: + or -?

AI Thread Summary
In a converging lens, magnification is negative when the object is placed outside the focal point, indicating that the image is virtual and erect. When the object is located at the focal point, the magnification becomes positive. This positive magnification signifies that the image is real and inverted. The distinction between negative and positive magnification is crucial for understanding image formation in optics. Understanding these principles is essential for applications in physics and optics.
Gear2d
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In a conversing lens, if the object is not within the focal point, then the magnification is "-". But in the case where the object is placed in the focal point, then the magnification is "+"?
 
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Gear2d said:
In a conversing lens, if the object is not within the focal point, then the magnification is "-". But in the case where the object is placed in the focal point, then the magnification is "+"?
Yes (you mean a converging lens). A "negative" linear magnification just means that the image is erect (and virtual). Read this: http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/raydiag.html#c2"
 
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