Two small satellites move in circular or...

Two small satellites move in circular orbits arounds the earth respectively, at distances r and `(r+/_\r)` from the centre of the earth. If their time periods are T and T and `T+/_\T(/_\r"ltlt"r,/_\T"ltlt"T)`, then

`/_\T= 3/2 T /_\r/r`

`/_\T= - 3/2 T /_\r/r`

`/_\T= 2/3 T /_\r/r`

`/_\T= T /_\r/r`

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