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A laser with a wavelength of 650 nm is shone through a diffraction grating. At an angle of 7.9° the light forms a first dark fringe when the screen is 50 cm from the grating. what is the number of grooves per mm for the diffraction grating?

A laser with a wavelength of 650 nm is shone through a diffraction grating. At an angle of 7.9° the light forms a first dark fringe when the screen is 50 cm from the grating. what is the number of grooves per mm for the diffraction grating?

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A laser with a wavelength of 650 nm is shone through a diffraction grating. At an angle of 7.9° the light forms a first dark fringe when the screen is 50 cm from the grating. what is the number of grooves per mm for the diffraction grating?
Transcribed Image Text:A laser with a wavelength of 650 nm is shone through a diffraction grating. At an angle of 7.9° the light forms a first dark fringe when the screen is 50 cm from the grating. what is the number of grooves per mm for the diffraction grating?
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