Image in a glass sphere (Ray Optics)

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Discussion Overview

The discussion revolves around the formation of images in a glass sphere, specifically contrasting hollow and solid spheres in the context of ray optics. Participants explore how the thickness of the sphere's walls affects image formation and focus.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants question the source of information regarding image formation in spheres, specifically asking about the thickness of the walls in hollow spheres.
  • There is a suggestion that the image formed in a hollow sphere differs from that in a solid sphere, with a focus on how wall thickness influences this difference.
  • One participant mentions that the focal point for distant objects, such as the Sun, can be calculated based on the refractive index of the material and that the hollow center's size affects the focus distance.
  • Another participant expresses skepticism about the reliability of classmates as sources of information on this topic.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the reliability of the information or the specifics of image formation in hollow versus solid spheres, indicating multiple competing views and unresolved questions.

Contextual Notes

Limitations include the lack of clarity on the definitions of "hollow" and "solid" spheres, as well as the dependence on the refractive index and wall thickness, which are not fully explored in the discussion.

anyonebutangel
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Where is 'it said'? If the sphere is hollow then how thick are the walls?
Think of a bubble.
 
Last edited:
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sophiecentaur said:
Where is 'it said'?
said by a classmate.
 
sophiecentaur said:
Where is 'it said'? If the sphere is hollow then how thick are the walls?
Think of a bubble.
I agree that image formed depends on the thickness of sphere.I just want to know how is it different from that formed in solid sphere.
 
anyonebutangel said:
said by a classmate.
I did wonder about that. Classmates are not always a good source of good info. :rolleyes:
Starting with a solid sphere, you can use this link to work out the point where a distant object (the Sun, for instance) will be focussed at an approximate focal point. The distance will depend on the material used (refractive index). As the hollow centre gets bigger, the focus will be further away until there is no focussing effect for a very thin shell.
 

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