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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2019
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Ionized hydrogen atoms and a-particles with same momenta enters perpendicular to a constant magnetic field B. The ratio of their radii of their paths $rH:r\alpha$ will be


( A ) 4:1
( B ) 2:1
( C ) 1:4
( D ) 1:2

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