Physics, asked by shivangking8979, 3 months ago

An optical power of 0.5mW is initially launched into an optical fibro. The power level is found to be 0.0190mW after 4 km The attenuation coefficient in this fibre will be
15 dB/km
25 dB/km
O 35 dB/km
345 dB/km

Answers

Answered by svdgsfbx

2

Answer:

15 is answer is correct

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