The shadow velocity is given by 0.4 m s-1 and shadow pulse of width – McqOptions

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1.	The shadow velocity is given by 0.4 m s-1 and shadow pulse of width 300 s is registered at an instant by the photodetector. Determine the outer diameter of the optical fiber in m.
A.	100 m
B.	120 m
C.	140 m
D.	90 m
Answer» C. 140 m

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