A diffraction grating is used to measure the wavelength of monochromatic light, as shown in the diagram. The spacing of the slits in the grating is 1.00 x 10–6m. The angle between the first order diffraction maxima is 70.0°. What is the wavelength of the light?
1 )
287 nm
2 )
470 nm
574 nm
4 )
940 nm
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