An LED emitting at 1 ïm with a spectral width of 50 nm is used in a Michel

Question

An LED emitting at 1 ïm with a spectral width of 50 nm is used in a Michelson interferometer. To
obtain a sustained interference, the maximum optical path difference between the two arms of the
interferometer is

Options:

A . 200 Î¼m

B . 20 Î¼m

C . 1 Î¼m

D . 50 Î¼m

Answer: Option B

-NA-

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