A diffraction pattern forms when light passes through a single slit. The wavelength of the light is $618$ nm $.$ Determine the angle that locates the first dark fringe when the width of the slit is $($a$)3\mathrm{.}00{10}^{-4}m$ and $($b$)3\mathrm{.}00{10}^{-6}m.$

$($a$)$ Number

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$($b$)$ Number

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