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

JEE Main Physics question

Two identical satellites are at and away from the earth surface, the wrong statement is ( radius of earth)

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

Answer: (D)

Solution

Orbital radii are and . Since total energy, kinetic energy and potential energy of a satellite all scale as , the ratio between the two satellites is the same value, , for all three quantities — (A), (B), (C) are each

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Question ID VK-154529