When a plane wavefront of monochromatic light is incident normally on a plane
transmission grating with 425 lines per mm, a 2nd order spectral line is observed at an angle of
30°. Find the wavelength of the monochromatic light.
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When a plane wavefront of monochromatic light is incident normally on a plane
transmission grating with 425 lines per mm, a 2nd order spectral line is observed at an angle of
30°. Find the wavelength of the monochromatic light.
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