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Two particles A and B having equal charges `+6C`, after being accelerated through the same potential differences, enter a region of uniform magnetic field and describe circular paths of radii `2cm` and `3cm` respectively. The ratio of mass of A to that of B is

A

`4/9`

B

`9/5`

C

`9/4`

D

`1/3`

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The correct Answer is:
A
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