State the principle of a cyclotron.
Principle of a cyclotron:
A charged particle can be accelerated to very high energies by passing it through a moderate electric field a number of times. Cyclotron uses the fact that the frequency of revolution of the charged particle in a magnetic field is independent of its energy. The particles move most of the time inside two semicircular disc-like metal containers, D1 and D2, which are called dees.