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OpenStudy (anonymous):
A grating is 3.2cm wide. A spectral line of wavelength 424nm is observed at 29 degrees in order 2. The grating is made up of how many lines?
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OpenStudy (anonymous):
hey try this site and see if it helps http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/gratcal.html
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