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    Optics and Wavelengths

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    For perpendicular incidences of light:

    For mth dark fringe,
    2*n*t = (m-1)*lembda .....(1)

    At the separated edge (separation = t) of ...

    Solution Summary

    This solution is provided in 125 words. It discusses incidences of light and dark fringes, as well as provides calculations for dark fringe and how thickness affects this.

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