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Old May 7th 2009, 06:06 AM   #1
Junior Member
Join Date: May 2009
Posts: 3
Unhappy Helium-Neon Laser / diffraction grating / - two questions!!!!


I have managed to get through a whole pile of questions, but Iím stuck with the last two.
I would very much appreciate step by step solutions to these problems (a number of parts to each question...); I've scanned them and uploaded them to flickr.com. See link below. I've also attached the questions to this message. These are exam type questions, so understanding how to go about solving the various parts of the problems is important to me. Any insight would be great!

links to questions:


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Helium-Neon Laser / diffraction grating / - two questions!!!!-physassi1.jpg  
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