Task id345

Task id345

Monochromatic light with a wavelength of 0.65 μm is normally incident on the diffraction grating D (Fig. 49). On screen E, located parallel to the grating and spaced 0.5 m from it, a diffraction pattern is observed. The distance between the diffraction maxima of the first order is 10 cm. Determine the constant of the diffraction grating and the total number of main maxima obtained using this grating.

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