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

An LED emitting at 1μm with a spectral width of 50nm is used in a Mic

1.	An LED emitting at 1μm with a spectral width of 50nm is used in a Michelson Interferometer. To obtain a sustained interference, the maximum optical path difference between the two arms of the interferometer is:
A.	200μm
B.	2μm
C.	1μm
D.	50μm
Answer» E.