76. Lloyd mirror point source S is located at a distanc

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76. Lloyd mirror point source S is located at a distanc

76. Lloyd mirror point source S is located at a distance l = 2 m from the screen. On the fringes of the system image (coherent sources are the primary source S and the virtual image S ´in the mirror). The width b of the interference fringes on the screen is 1.2 mm. Determine a wavelength λ of light if after the source S pushed out of the plane mirror on Δd = 0,5 mm, the width of the bands decreased in n = 2 times.

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

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