Two protons are projected in a magnetic ...

Two protons are projected in a magnetic field ‘B’ with velocities ‘V'and 2V perpendicular to the direction of field.Their cyclotron frequencies are fA and fB.Then the correct relation between them is—

`fA gt fB`

`fA = fB`

`fA lt fB`

`fA = fB = 0`

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