Geometrical Optics: Construct Ray Paths for Lens-Mirror System

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Homework Help Overview

The discussion revolves around constructing ray paths for a system involving a convex lens and a convex mirror, both aligned along the same principal axis. The original poster seeks clarification on the ray behavior in this optical setup.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express confusion regarding the wording of the problem and the lack of specific details, such as the focal lengths of the lens and mirror. There is mention of using trial and error to approach the problem, with suggestions to start by drawing the optical components and analyzing ray paths.

Discussion Status

The discussion is ongoing, with participants questioning the clarity of the problem statement and exploring different methods to visualize the ray paths. Some guidance has been offered regarding the initial steps to take, but there is no consensus on how to proceed effectively.

Contextual Notes

Participants note the absence of critical information, such as the radius or focal length of the mirror, and whether the lens is positioned within or outside the mirror's focal length, which may affect the analysis.

Chemist
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A convex lens of focal length f is placed in front of a convex mirror having the same principal axis as the lens. Construct the path of a ray of light which coincides with the corresponding ray emerging from the lens-mirror system, and the path of the ray whose corresponding emergent ray is its symmetrical with respect to the principal axis.

Does this make any sense to anyone?
 
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I believe this is the worst-worded ray-diagram question I have eaver read. Do they mention what the radius or focal length of the mirror is? Is the lens placed inside or outside the mirrors focal length?
 
Absolutely nothing! Most questions involved in this course I am taking are similar to this, & most of the times I'm not quite sure where to start.

I think it's trial & error all the way ...
 
Chemist said:
I think it's trial & error all the way ...
Well then, draw a lens and a mirror. Put in the focal points. Start with a parallel ray and see where it goes. Take the outcoming ray and draw a new ingoing ray that is symmetrical to the first outgoing ray.
 

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