Solving a problem in physics section 18 point 40 optics

Solving a problem in physics section 18 point 40 optics

40. In the diffraction grating in the direction normal to the surface of incident monochromatic light. The lattice period d = 2mkm. What the highest order diffraction peak gives this grid in the case of red light (λ1 = 0,7 m) in the case of violet (λ2 = 0,41 m)?

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)