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a student performs Young's double-slit experiment using a slit separation of 145 um. A screen is...

a student performs Young's double-slit experiment using a slit separation of 145 um. A screen is placed in front of the sources such that the first nodal line (dark band) is located exactly 1.00 cm from the centre of the interference pattern. If red light with a wavelength of 725 nm was used, how far away was the screen? show work.

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