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Kao and Hockham proposed in 1965 that fibre attenuation could fall below what value?
A200 dB/km
B2 dB/km
C0.2 dB/km
D20 dB/km
Answer & Solution
Correct answer: D. 20 dB/km
They argued that attenuation below 20 decibels per kilometre would make fibre a practical communication medium.
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