What is distance from the central bright spot to bright spot

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A red laser, with a wavelength of 640 nm, shines on a diffraction grating with a grating spacing of 500 lines/mm. The resulting diffraction pattern is observed on a screen 1.00 meters away from the grating. What is the distance from the central bright spot to the first bright spot on the side?

Reference no: EM13339126

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