Question: When passed through a diffraction grating with a slit spacing of 0.004 mm (4 x 10 -6 m), the first-order fringe for light of a

When passed through a diffraction grating with a slit spacing of 0.004 mm (4 x 10-6 m), the first-order fringe for light of a single wavelength lies a distance of 29 cm from the center of a screen located 2.0 m from the grating. What is the wavelength of the light?

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