# ► The electron moving at rate of 2 x 107 in uniform magnetic field of 1.10 x 10-3 then the radius of an orbit will be

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**Question :**The electron moving at rate of 2 x 10

^{7}in uniform magnetic field of 1.10 x 10

^{-3}then the radius of an orbit will be

(A). 9.4 x 10

^{-2}m

(B). 9 x 10

^{-2}m

(C). 5.4 x 10

^{-2}m

(D). 1.4 x 10

^{-2}m

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