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`H^+, He^+` and `O^(++)` are project in uniform transverse magnetic field with equal acceleration potential, then ratio of their radii are respectively if their masses are 1 a.m.u, 4 a.m.u and 16 a.m.u respectively:
A. |
`1:sqrt2:2sqrt2` |
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B. |
`1:sqrt2:sqrt2` |
C. |
`1:2:2sqrt2` ` |
D. |
`sqrt2:2:1` |