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Old Aug 28th 2012, 05:08 AM   #1
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Join Date: Aug 2012
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Exclamation light wavelength and grating help! GRADE 12 PHYSICS!!!

light with a wavelength of 520 nm abd 630 nm passes through a diffraction grating that contains 6000 lines/cm.

a) sketch a diagram of the image produced from m=0 to m=2, label the order of each fringe

b) calculate the angles for the first and second order maxima that would appear on the screen

i have no idea where to start someone please help!
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