What is the spacing between slits of the grating

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Reference no: EM13295212

A helium-neon laser (?=633 nm) illuminates a diffraction grating. The distance between the two m=1 bright fringes is 31 cm on a screen 2.2 m behind the grating. What is the spacing between slits of the grating?

Reference no: EM13295212

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