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OPTICS - Final tomorrow - Practice test help

by ChEJosh
Tags: final, optics, practice, test
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Dec13-07, 06:00 PM
P: 27
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

(3) I haven't been able to start this one at all.

(6) I got part a (+45 P-state). I tried to do b and I got [1+i, -i+1] which isn't a polarization state, so I'm not sure what to do with c or if there is some way I can simplify it.

(7) Once again, I got part a. It's of the form E=[tex]E_{0}[/tex][[tex]\widehat{i}[/tex]cos(kz-wt)+[tex]\widehat{j}[/tex]sin(kz-wt)]
Does the cosine term drop out from the initial conditions?
For b, I'm not sure how to get the magnetic field equation. I know [tex]\overline{B}[/tex]=([tex]\overline{K}[/tex][tex]\times[/tex][tex]\overline{E}[/tex])/[tex]\omega[/tex]
But, I'm not sure how that helps me

Any help would be greatly appreciated!
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Dec13-07, 06:14 PM
Sci Advisor
HW Helper
P: 8,953
3, sounds like it is describing a kepler telescope - a common design for a beam expander.
The two positive lenses are separated by the sum of their focal lengths.
The magnification is the ratio of the focal lengths.
A simple sketch shows you how it works.
Dec13-07, 07:26 PM
P: 19
What school do you go to, that paper and font, its exactly the same, is there some standard I don't know about?

Dec13-07, 07:29 PM
P: 27
OPTICS - Final tomorrow - Practice test help

Quote Quote by topherfox View Post
What school do you go to, that paper and font, its exactly the same, is there some standard I don't know about?
And apparently, if you only have 3 characters in a message, it's "too short"

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