JEE Main Physics question

Out of the following, the only correct statement about satellites is

(A)A satellite cannot move in a stable orbit in a plane passing through the earth's centre
(B)Geostationary satellites are launched in the equatorial planeCorrect
(C)We can use just one geostationary satellite for global communication around the globe
(D)The speed of satellite increases with an increase in the radius of its orbit

Answer: (B)

Solution

Every satellite orbit's plane necessarily contains earth's centre (since gravity is central), so (A) is false. Geostationary satellites must orbit directly above the equator to stay fixed relative to a ground point, confirming (B). A single

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Question ID VK-154466