Question: W 5 2 8 . 6 8 . White light strikes a diffraction grating ( 6 0 5 lines / mm ) at normal incidence.

W528.68. White light strikes a diffraction grating (605 lines/mm) at normal incidence. What is the highest-order visible maximum that is formed? How many fringes are seen?
Answer: 4; 9 bright spots
W 5 2 8 . 6 8 . White light strikes a diffraction

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