- #1
marla1
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Homework Statement
Two thin convex lenses (1 and 2) and a small object are arranged as shown.
a) Use the three principal rays to determine the location of the image of the object produced by lens 1.
. Object
--------.F1---0(Thin lens 1)---.F1-----------.F2----0(Thin lens 2 - longer)---->F2-----------
b) Treat the image produced by lens 1 as an object for lens 2. Use the three principal rays to determine the location of the image of this object produced by lens 2.
Is this image produced by the pair of lenses real or virtual? Explain your reasoning.
c) Repeat parts a and b for the case in which lens 2 is replaced with a different lens (lens 3), as shown below.
.Object
----.F1--0(Thin lens 1)---.F1---.F3-------0(Thin lens 3 - longer)-------.F3------------------------
Is the image produced by the pair of lenses real or virtual? Explain your reasoning.
Homework Equations
Not quite sure of the relevant equations here.
The Attempt at a Solution
For part a, I would draw a parallelogram of principal rays and the location of the image object would be inbetween F1 and F2?
For part b, the location of the image object produced by lens 2 would be towards the right end of the page. It would be a real image.
For part c, I am unsure how my answer would differ from above, although I think it would be a virtual image.
Thanks in advance for your help! Better pictures are attached.