A conducting sphere $S_1$ of radius r is attached to an insulating handle. Another conducting sphere $S_2$ of radius R is mounted on an insulating stand, $S_2$ is initially uncharged.$S_1$ is given a charge Q brought into contact with $S_2$ and removed. $S_1$ is recharged such that the charge on it is again Q and it is again brought into contact with $S_2$ and removed. This procedure is repeated n times. Then which of the following statements is correct?