Question: A helium - neon laser ) = ( 6 3 3 n m illuminates a diffraction grating. The distance between the two m = 1

A helium-neon laser )=(633nm illuminates a diffraction grating. The distance between the two m=1 bright fringes is 32 cm on a screen 1.7 m behind the grating.
A helium - neon laser ) = ( 6 3 3 n m illuminates

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