73. In the diffraction grating comprising n = 500 strokes per 1 mm is incident monochromatic light of wavelength λ = 700 nm. Behind bars placed with the main converging lens focal length f = 50 cm. Determine the linear dispersion Dl such a system for a maximum of the second order. The answer is expressed in millimeters per nanometer.

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