(II) Red laser light from a He-Ne laser (A = 632.8 nm)
Chapter , Problem 35(choose chapter or problem)
(II) Red laser light from a He-Ne laser (A = 632.8 nm) isused to calibrate a diffraction grating. If this light creates asecond-order fringe at 53.2 after passing through thegrating, and light of an unknown wavelength A creates afirst-order fringe at 20.6, find A.
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