cse • paper_1 • waves_oscillationscse-2009-subject-02-012
Optical fibre — UPSC CSE 2009 Physics PYQ
Buy PYQ Solution Manual →Optical power of 1\text{ mW} is launched into an optical fiber of length 100\text{ m}. If the power emerging from the other end is 0\cdot 3\text{ mW}, calculate the fiber attenuation.
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