14 | An alternating electric field, of frequency ν, is applied across the dees (radius = R) of a

An alternating electric field, of frequency ν, is applied across the dees (radius = R) of a cyclotron that is being used to accelerate protons (mass = m). The operating magnetic field (B) used in the cyclotron and the kinetic energy (K) of the proton beam, produced by it, are by:
(a) B=mv/e and K=2mπ^2 v^2 R^2, (b) B=2πmv/e and K=m^2 πvR^2, (c) B=2πmv/e and K=2mπ^2 v^2 R^2, (d) ) B=mv/e and K=m^2 πvR^2

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