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Questions  

A proton is accelerating in a cyclotron having external magnetic field of 0.7 T. If the radii of its dees is 1.8 m, then its maximum kinetic energy (in MeV) is (approximately) 

a
90
b
700
c
76
d
100

detailed solution

Correct option is C

Kmax=q2B2R22m=1.6×10−122×(0.7)2×(1.8)22×1.67×10−27J=76MeV

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