Estimate RMS pulse broadening per km due to intermodal dispersion for multimode step index fiber where length of fiber is 4 km and pulse broadening per km is 80.6 ns.

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1.	Estimate RMS pulse broadening per km due to intermodal dispersion for multimode step index fiber where length of fiber is 4 km and pulse broadening per km is 80.6 ns.
A.	18.23ns/km
B.	20.15ns/km
C.	26.93ns/km
D.	10.23ns/km
Answer» C. 26.93ns/km

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