10 question solution
Q.10. A cyclotron is used to obtain 2 MeV protons. If frequency is 5 MHz and potential is 20 kV, the magnetic field necessary for resonance is
1) 2.32T
2) 0.327T
3) 0.528T
4) 0.389T

Dear Student,
                     We have f=Bq2πm5×106=B×1.6×10-192×3.14×1.66×10-27B=5×106×2×3.14×1.66×10-271.6×10-19=.327T
Regards

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the answer is a
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