Final answer:
The statement Communications satellites are placed in a circular orbit is False. Communications satellites are actually placed in geostationary or geosynchronous orbits, which are special types of elliptical orbits.
Step-by-step explanation:
The statement Communications satellites are placed in a circular orbit is False. Communications satellites are actually placed in geostationary or geosynchronous orbits, which are special types of elliptical orbits. These orbits allow the satellites to remain above the same point on Earth at all times, making them useful for communication purposes.In geostationary orbits, the satellites have an orbital period of exactly 24 hours, which matches the rotation period of the Earth. This means that they appear stationary in the sky when observed from the surface of the Earth. In geosynchronous orbits, the satellites also have an orbital period of 24 hours, but their orbits are slightly inclined with respect to the equator.Therefore, communications satellites are not placed in circular orbits, but rather in special elliptical orbits that enable them to stay in a fixed position relative to the Earth.