Answers

2016-03-03T00:41:34+05:30
Mv²/r=qvb 
r=mv/bq
let mass of proton = m₁
then mass of alpha particle = 4m₁
let charge of proton = q₁
then charge of alpha particle = 2q₁
substituting the values of mass and charge and taking the ration we get
1:2

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