WBBSE Madhyamik Telecom (Vocational) Practice Questions - West Bengal Board Class 10 Secondary Vocational Telecom Examination Exam

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A single-mode fiber optic link has an attenuation coefficient of 0.35 dB/km at a operating wavelength of 1310 nm. What is the total optical fiber attenuation across a 20 km continuous link?

7.0 dB 0.35 dB 14.0 dB 5.7 dB

Correct Answer:

7.0 dB

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