Any tutorial on optic physics using 2 lenses (+ and -)

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SUMMARY

This discussion focuses on the conventions for understanding optics using two types of lenses: converging and diverging. The key takeaway is that the sign conventions for mirrors can be applied to lenses, with the exception of image distance. For mirrors, distances in front are positive and those behind are negative. For lenses, a converging lens follows the same rules as a converging mirror, while a diverging lens also follows similar rules, but with a negative image distance if the image is in front of the lens.

PREREQUISITES
  • Understanding of basic optics principles
  • Familiarity with mirror sign conventions
  • Knowledge of lens types: converging and diverging
  • Basic mathematical skills for calculating distances and focal lengths
NEXT STEPS
  • Study the sign conventions for mirrors in detail
  • Learn about the optical properties of converging lenses
  • Explore the characteristics of diverging lenses
  • Practice calculations involving focal lengths and image distances for both lens types
USEFUL FOR

Students of physics, optical engineers, and anyone interested in mastering the principles of lens optics and their applications in real-world scenarios.

EternityMech
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the title pretty much. thanks.
 
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Not really a tutorial but I learned the conventions for mirrors first then translated them into the ones for lenses.

Firstly and most importantly, establish what sides of the mirror/lens are in front and behind.

For mirrors, it's simply identifying whether or not it's in front or behind the mirror. If it's in front, it's positive ( + ). If it's behind, it's negative ( - ). This the rule for focal length, radius of curvature, image distance, and object distance. Easy.

Now once you've got that down, for lenses all you have to do is identify whether its a converging or diverging lens. If it's a converging LENS you use all the sign conventions for a converging MIRROR, *EXCEPT* for the image distance. The same applies to diverging lenses (Again, *EXCEPT* image distance - i.e. image distance is negative if image is in front of lens)

Hope this is helpful.

Steve
 

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