If mirror in Michelson’s interferometer is moved through 0.233 mm, 792 fringes are counted with a light meter. We have to find the wavelength of light.
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Solution: Click For PDF Version When one of the mirrors of the Michelson’s interferometer, say , is moved by o.233 mm, the additional path difference between the rays that interfere to form fringe will be. If 792 fringes are counted during the process, the path difference x will be related to wavelength as
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