A helium-neon laser 633 nm illuminates a diffraction
A Helium-Neon laser (?=633 nm) illuminates a diffraction grating. The distance between the two m=1 bright fringes is 32 cm on a screen 2 m behind the grating. What is the spacing between the slits of the grating? Draw a sketch.
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a helium-neon laser 633 nm illuminates a diffraction grating the distance between the two m1 bright fringes is 32 cm on
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