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Two ions having masses in the ratio `1 : 1` and charges `1 : 2` are projected into uniform magnetic field perpendicular to the field with speeds in th ratio `2 : 3`. The ratio of the radius of circular paths along which the two particles move is

A

`4:3`

B

`2:3`

C

`3:1`

D

`1:4`

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The correct Answer is:
A
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