7. For a grating that contains 1400 blazes/mm, if angle of incidence = 48° and n=2, then wavelength that will appear at angle of reflection 20° is

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7. For a grating that contains 1400
blazes/mm, if angle of incidence = 48° and
n=2, then wavelength that will appear at
angle of reflection 20° is
0.748 nm
374 nm
187 nm
748 nm
Transcribed Image Text:7. For a grating that contains 1400 blazes/mm, if angle of incidence = 48° and n=2, then wavelength that will appear at angle of reflection 20° is 0.748 nm 374 nm 187 nm 748 nm
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