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NEET-XII-Physics

P1 year:2019

with Solutions -
Qstn# 3 Prvs-QstnNext-Qstn
  • #3
    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
    ``r_H : r_\alpha`` will be :
    (1) 2 : 1
    (2) 1 : 2
    (3) 4 : 1
    (4) 1 : 4
    digAnsr:   1
    Ans : ( 1 )
    Sol.
    ``r_H = \frac{p}{eB}`` and ``r_\alpha = \frac{p}{2eB}``
    on simplification, we get 2:1