Physics 9702 · AS & A Level · Kinematics of uniform circular motion
Outline the basic principles involved in using a geostationary satellite for communication on Earth.
Polar‑orbiting satellites are also used for communication on Earth. State and explain one benefit and one drawback of polar‑orbiting satellites compared with geostationary satellites.
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Carrier wave travels from Earth to the satellite; weak signal is received; it is amplified and sent back on another frequency; separate uplink and downlink frequencies prevent swamping” …