When laser light of wavelength 632.8 nm passes through a diffraction grating, the first bright spots occur at ±17.8∘ from the central maximum. (a) What is the line density (in lines/cm) of this grating? (b) How many additional bright spots are there beyond the first bright spots, and at what angles do they occur?
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When laser light of wavelength 632.8 nm passes through a diffraction grating, the first bright spots...
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