Solving a problem in physics section 2 point 98 optics

Solving a problem in physics section 2 point 98 optics

98. The parallel light beam is normally incident on the plate from Iceland spar thickness of 50 microns, cut parallel to the optical axis. Taking the refractive indices of Iceland spar for the ordinary and extraordinary rays, respectively, no = 1,66 and ne = 1,49, to determine the path difference of the rays passing through the plate.

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