Problem a diffraction grating has 3194 linescm light that, Ask an Expert

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Problem: A diffraction grating has 3194 lines/cm. Light that contains all wavelengths between 460 and 643 nm shines on the grating.

Part A: Calculate the width of the dark area between the first and second order spectra on a screen 4.7 m away.

Please show al work and steps to determine the width of the dark area between the first and second order spectra.

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