Maximum kinetic energy gained by charged particle in a cyclotron is given by
$E_{K}=\frac{q^{2} B^{2} R^{2}}{2 m}$
where, $q=$ charge of the cyclotron, $B=$ intensity of magnetic field, $R =$ radius of orbit and $m=$ mass of the particle, Hence, $E_{K}$ is independent of frequency of revolution.