Question

formula for calculating wave length of light in michelson interferometer is

Answer 1

Explanation:

The m = 122 fringes observed compose the difference between the number of wavelengths that fit within the empty chamber (vacuum) and the number of wavelengths that fit within the same chamber when it is gas-filled. The wavelength in the filled chamber is shorter by a factor of n, the index of refraction. N=Lλ=2tλ0/n.

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Answer 2

The answer is in the attachment