Question: (c) A Michelson interferometer is used to measure the displacement of a linearly moving object. The target mirror is mounted on the moving object.

(c) A Michelson interferometer is used to measure the displacement of a linearly moving object. The target mirror is mounted on the moving object. The laser source used in this system is laser diode with the wavelength of 635 nm. When the object moves from position A to position B, 500 fringes movement on the detector are counted. What is the displacement of the moving object? If the same setup was used to measure a displacement of around 500 mm, what would be the risk?

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