80° The figure above shows a cross-section of an optical fibre used in telecommunication. (a.) State and explain two reasons why optical fibres are preferable to copper cables for this purpose. (b.) State the principle on which optical fibres operate and state the conditions under which this principle is satisfied. (c.) How are the conditions stated above made satisfied in the manufacture of o ptical fibres? (d.) The speed of light in the core is 1.95 x 108ms-1 while the smallest angle of incidence in the core is 80°. (i.) Explain the significance of the statement "smallest angle of incidence in the core is 80°". (ii.) Calculate the refractive index of the core and that of the cladding.

80° The figure above shows a cross-section of an optical fibre used in telecommunication. (a.) State and explain two reasons why optical fibres are preferable to copper cables for this purpose. (b.) State the principle on which optical fibres operate and state the conditions under which this principle is satisfied. (c.) How are the conditions stated above made satisfied in the manufacture of o ptical fibres? (d.) The speed of light in the core is 1.95 x 108ms-1 while the smallest angle of incidence in the core is 80°. (i.) Explain the significance of the statement "smallest angle of incidence in the core is 80°". (ii.) Calculate the refractive index of the core and that of the cladding.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter29: Service-entrance Calculations

Section: Chapter Questions

Problem 3R: a. What is the ampere rating of the circuits that are provided for the small-appliance loads? _____...

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