Real 3D Image produced by concave lens

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SUMMARY

The discussion centers on the characteristics of images produced by concave lenses, specifically addressing the confusion between concave and convex lenses. The correct understanding is that a concave lens produces a virtual, upright, and smaller image when the object is placed within the focal length. The participant initially misidentified the lens type and the resulting image characteristics, leading to incorrect answers on their exam. The use of ray diagrams is emphasized as a critical tool for visualizing the image formation process.

PREREQUISITES
  • Understanding of lens types: concave and convex lenses
  • Knowledge of focal length and its significance in optics
  • Ability to interpret ray diagrams for image formation
  • Familiarity with basic physics principles related to optics
NEXT STEPS
  • Study the properties of concave lenses in detail
  • Learn how to construct and analyze ray diagrams for different lens types
  • Explore the differences between real and virtual images in optics
  • Review the focal length calculations for concave and convex lenses
USEFUL FOR

Students studying physics, particularly those focusing on optics, as well as educators looking to clarify concepts related to lens behavior and image formation.

Knightycloud
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Homework Statement


Find the correct image produced by the concave lens. F is focal length.


Homework Equations


If an object is placed between F and 2F, the image will be inverted, real, larger and beyond 2F.


The Attempt at a Solution


I choose the answer A. Is it correct?

*Please refer attachments. Thanks!
 

Attachments

  • Lense.JPG
    Lense.JPG
    6 KB · Views: 511
  • Lense Ans.JPG
    Lense Ans.JPG
    3.4 KB · Views: 515
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Use a ray diagram to resolve this problem. The arrow head of the object is closer to the lens.
 
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Thanks, the answer is B. I marked it wrong anyway! :/
 
My ray diagram suggests neither are correct?
 
Sorry, I think the image makes a little fuzzy. That arrow curve is perpendicular to the axis. In this image it looks it's headed towards i see.
 
The image is smaller, upright and virtual.
 

Attachments

  • concave lens ray diagram.jpg
    concave lens ray diagram.jpg
    11.1 KB · Views: 567
My bad. It's a convex lens :( Sorry, now only noticed.
Basic_Physics
I think now you can get it correct. Thanks for the support. :) It was in my exam paper and I chose the wrong one anyway! :(
 

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