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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Saurabh 1 Best Answer
For third part just use the simple relation between Birefringence, retardation and thickness .. Here the thickness is 0.05 mm and Birefringence for quartz is 0.009.. So using relation, Retardation (∆) = t×ß where ß is Birefringence and t is thickness.. Putting values we get, Retardation = 0.05×0.009mm = 0.00045mm