WAEC Physics 2023 Theory — Question 7

Model answer

(a) Fibre optics (optical fibre) refers to the technology that transmits information or data using pulses of light through a thin transparent fibre made of high-quality glass or plastic. (b) Reasons optical fibres are preferred to copper cables: they have greater bandwidth and are capable of transmitting signals/data at faster speed over longer distances; they have greater efficiency; they have higher-quality transmission with low resistance.