2 Hard Physics Questions (for me)?

Posted on 2014-04-15 07:26:00 in Physics by KARL

I'm doing physics homework on Young's Slits. I've managed to answer most of the questions but there's 2 I just don't get!



1. Visible light ranging in wavelengths from 400nm to 700nm falls on a grating with 400 lines per mm. Describe the spectrum that is observed.



2. In a Young's two-slit experiment it is found that an nth-order maximum for a wavelength of 680nm coincides with the (n+1)th maximum of light of wavelength 510nm. What is n?



Any help would be greatly appreciated. Thanks! :)

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