일반물리학 2 — Interference: Problem 73

73 A thin flake of mica (\(n = 1.58\)) is used to cover one slit of a double-slit interference arrangement. The central point on the viewing screen is now occupied by what had been the fifth bright side fringe (\(m = 5\)). If \(\lambda = 550 \text{ nm}\), what is the thickness of the mica?