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Geometrical Optics

  • Thread starter Chemist
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  • #1
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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?
 

Answers and Replies

  • #2
Chi Meson
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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?
 
  • #3
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Absolutely nothing! Most questions involved in this course Im 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 ...
 
  • #4
Chi Meson
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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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