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A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm...

A diffraction grating with 610 lines per mm is illuminated with light of wavelength 520 nm . A very wide viewing screen is 2.0 m behind the grating. Part A What is the distance between the two m=1 fringes? Express your answer in meters. ΔyΔ y = nothing m Request Answer Part B How many bright fringes can be seen on the screen? Express your answer as an integer.

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