MHT CET Physics question

If two identical satellites are at R and 7R away from earth surface, the wrong statement is (R = Radius of earth)

(A)Ratio of their total energy will be 4
(B)Ratio of their kinetic energies will be 4
(C)Ratio of their potential energies will be 4
(D)Ratio of their total energy will be 4 but ratio of potential and kinetic energies will be 2Correct

Answer: (D)

Solution

Orbital radii are 2R and 8R; , and all vary as , so each ratio between the two satellites is

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Question ID VK-059991