WAEC 2023 Physics Questions and Answers (Essay and Objective)
Tuesday, 23rd May, 2023
- Physics 2 (Essay) – 2:00pm – 3:30pm
- Physics 1 (Objective) – 3:30pm – 4:45pm
(i) Orbital: Revolve in equatorial orbits and complete one circle of the earth in 24 hours
(ii) Distance from the Earth surface: Placed at a height of 36000km from the Earth surface.
(iii) Uses: Uses as communication satellites.
(i) Orbital: Revolve in polar orbits of the earth and take less time to complete one circle of earth
(ii) Distance from the Earth surface: Placed at a height of 500800km from Earth surface.
(iii) Uses: Remote sensifig, weather, science and environment related studies.
Fiber optics is a technology that uses optical fibers to transmit data as light signals, delivering high bandwidth, electromagnetic immunity, and low signal loss.
(i) Fiber optic cables transmit data much faster than copper wires do because fiber optics use the speed of light rather than the speed of electrons.
(ii) Fiber optic cables are not affected by potential electromagnetic interferences that can come from proximity to heavy machinery like copper wires are.