Final answer:
The question regarding the number of imperfections in 100 meters of optical cable cannot be answered without specific data or references to a type of cable, as the amount of imperfections is highly dependent on manufacturing quality and processes.
Step-by-step explanation:
The question 'On average, how many imperfections are there in 100 meters of optical cable?' does not have enough information provided to give a definitive answer. The quality and manufacturing process of optical cables can greatly influence the number of imperfections. Therefore, without specific data or a reference to a specific type of optical cable, we cannot accurately select one of the multiple-choice responses provided (10, 15, 20, 25 imperfections).
Imperfections in an optical fiber can include physical defects like bubbles or impurities in the glass, as well as inconsistencies in the fiber's diameter or the refractive index. These imperfections can scatter or absorb light, leading to signal loss. The manufacturing quality control of the optical cables largely determines the number of imperfections over any given length of cable.
To accurately determine the average number of imperfections over 100 meters of a particular optical cable, specific data from the manufacturer or experimental measurements would be necessary.