Converging and diverging lenses

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    Converging Lenses
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SUMMARY

This discussion focuses on the principles of image formation through converging and diverging lenses. It clarifies that the orientation of an image (inverted or upright) can be determined by analyzing ray diagrams, specifically by observing the position of the top and bottom lines of the image. Additionally, the size of the image is calculated by measuring the distance between the top and bottom lines at the object and the image, with the ratio indicating the magnification or reduction of the image size.

PREREQUISITES
  • Understanding of ray diagrams in optics
  • Familiarity with the concepts of real and virtual images
  • Knowledge of magnification calculations
  • Basic principles of lens types (converging and diverging)
NEXT STEPS
  • Study the principles of ray tracing for converging lenses
  • Learn about the characteristics of virtual images in diverging lenses
  • Explore the mathematical formulas for magnification in optics
  • Investigate the applications of lenses in optical devices
USEFUL FOR

Students studying physics, educators teaching optics, and anyone interested in understanding the behavior of light through lenses.

rockind78
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Hello,

I am reading over the topic of converging and diverging lenses, and I had a question relating to phenomena of image formation as seen through these. Based on the ray diagrams that are typically used (freshman physics) how does one conclude whehter or not an image is inverted or upright? I know that a real versus virtual images depends on whether or not you have a convergence of the rays upon the focal point, but I am not sure about the former. Any insight would be wonderful! Thank you!
 
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Just look at the lines. If the line that was on the top ends up on the bottom, then the image is inverted.
 
Thank you for the prompt response. It is very much appreciated!:smile: . If it isn't too much trouble, would you mind explaining how the size of the image is determined as well?
 
Measure the distance between the top and bottom line where they leave the object, and between the top and botom line where they form the image. The ratio of the two dimensions tells you by how much the image is magnified or reduced.
 

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