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Discussion :: GATE Instrumentation

  1. An LED emitting at 1 m 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
    2. A.
    200 μm
    B.
    20 μm
    C.
    1 μm
    D.
    50 μm

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    Answer : Option B

    Explanation :

    -NA-

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