A) 4 : 3
B) 2 : 3
C) 3 : 1
D) 1 : 4
Correct Answer: A
Solution :
\[r=\frac{mv}{qB}\Rightarrow \frac{{{r}_{1}}}{{{r}_{2}}}=\frac{{{m}_{1}}{{v}_{1}}}{{{m}_{2}}{{v}_{2}}}\times \frac{{{q}_{2}}}{{{q}_{1}}}=\frac{1\times 2}{1\times 3}\times \frac{2}{1}=\frac{4}{3}\]
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