Which of the following statement is correct but satellites ?

1.	Which of the following statement is correct but satellites ?
Answer» A satellite cannot move in a stable orbit in a plane passing through the earth's CENTRE. Geostationary satellites are launched in the equatorial plane. We can use just one geostationary satellite for global COMMUNICATION around the globe. The speed of satellite INCREASE with an increase in the radius of its orbit. Solution :(b) Orbital speed of satellite, `v_(o)=sqrt((GM_(E))/( r))` So, orbital speed of satellite DECREASE with the increase in the radius of its orbit. We need more than one satellite for global communication. For stable orbit, satellite must pass through the centre of earth. Only (b) is a correct statement.

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