When a satellite revolves round the earth?

A geostationary satellite revolves round the earth from

A goestationary satellite revolves around the earth from

A body has a sense of weightlessness in a satellite revolving round the earth.Why?

A satellite revolving around the earth is

For a satellite revolving around the earth

Radius of a geostationary satellite revolving round the earth is 'r'. Then period of revolution of another satellite revolving in an orbit of radius r/2 is

Which of the following graphs is true for the motion of a satellite revolving round the Earth. ('T" is the time period of a satellite and 'r' is the distance of the satellite from the Earth).