Two ions having masses in the ratio 1 : ...

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

`4:3`

`2:3`

`3:1`

`1:2`

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