107. (a) Every time one more destructive (constructive) fringe appears the increase in thickness of the air gap is λ/2. Now that there are 6 more destructive fringes in addition to the one at point A, the thickness at Bis tB= 6(λ/2) = 3(600 nm) = 1.80 µm.
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.