Question: 5 2 0 nm light is incident on a diffraction grating with 2 2 3 lines / mm . How many maxima are observed? [

520 nm light is incident on a diffraction grating with 223 lines/mm. How many maxima are observed?
[Hint: Your answer should be an integer 1. There is a central maximum at m =0 followed by pairs on either side.]

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