5 points An optical power of 0 5mW is initially launched

Last updated: 6/26/2023

5 points An optical power of 0 5mW is initially launched into an optical fibre The power level is found to be 0 0199mW after 4 km The attenuation coefficient in this fibre will be 1 5 dB km 2 5 dB km 3 5 dB km 345 dB km Save Answer