If the kinetic energy of a satellite revolving around the earth in any orbit is doubled, what will happen to it?



The total energy of a satellite in any orbit, E = - K, where K is its KE in that orbit.
If its kinetic energy is doubled, i.e. an additional kinetic energy {K) is given to it, E = — K + K — 0 and the satellite will leave its orbit and go to infinity.