Solving a problem in physics section 55 point 68 optics

Solving a problem in physics section 55 point 68 optics

68. The period of the grating is equal to 0.009 mm. What is the least number of strokes should include the grate to two components with wavelengths of 6004 and 6027 Ǻ Ǻ can be observed separately in the spectrum of the 3rd order?

Additional information:

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

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