White light strikes a diffraction grating (890 lines/mm) at normal incidence. What is the highest-order visible maximum that is formed?
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A diffraction grating having 520 {\rm lines}/{\rm mm} diffracts visible light at 31^\circ. What is the light's wavelength? answer is nm
What is the maximum number of lines per centimeter a diffraction grating can have and produce a complete first-order spectrum for visible light?
The human eye can readily detect wavelengths from about 400 nm to 700 nm. If white light illuminates a diffraction grating having 750 lines/mm, over what range of angles does the visible m = 1 spectrum extend?