Question

cion 2 (17 points) 2. Given a Michelson interferometer that was set using Sodium light (a = 600 nm) to produce a series of bright and dark fringes with the center being a bright one. When a plastic slide of 0.036 mm and index of refraction 1.60 nm was introduced in the moving arm of the setup normal to the beam, the pattern changed such that the fringes were shifted, dying into the center with the central fringe appearing dark. Calculate by how many fringes the pattern has shrunk in number. s olo - Paragraph B I U

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Answer 1