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A diffraction grating gives a second-order maximum at as angle of 31‹ for violet light (ƒÉ = 4.0 ~ 102 nm). If the diffraction grating is 1.0 cm in width, how many lines are on this diffraction grating?

  • physics -

    f c k you

  • physics -

    no cussing allowerd or you will be reported
    -moderater.

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