Q.
Ionized hydrogen atoms and α -particles with same momenta enters perpendicular to a constant magnetic field, B. The ratio of their radii of their paths rH : rα will be
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a
1 : 4
b
2 : 1
c
1 : 2
d
4 : 1
answer is B.
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Detailed Solution
r=mvqB=pqB For given p and B,r∝1q⇒rHrα=qαqH=21
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