If the radius of the dees of cyclotron is r then the kinetic energy of a proton of mass m accelerated by the cycloton at an oscillating frequency v is
A. `4pi^(2)m^(2)v^(2)r^(2)`
B. `4pi^(2)mv^(2)r^(2)`
C. `2pi^(2)mv^(2)r^(2)`
D. `pi^(2)mv^(2)r^(2)`

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Correct Answer - C
Given r is the outside radius of the dees v is the speed of the particle when travelling in a path of this radis and m is the mass of proton kinetic energy of particles accelerated in a cyclotorn
`K=2pi^(2)mv^(2)r^(2)`

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