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Magnetics question

2021 · 20 Jul · Shift 1 · Q45
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  5. /2021 · 20 Jul · Shift 1 · Q45

Magnetics question

2021 · 20 Jul · Shift 1 · Q45

JEE MainPhysicsMagneticsMCQ+4 / −1
A deuteron and an alpha particle having equal kinetic energy enter perpendicularly into a magnetic field. Let rd and r α\alphaα be their respective radii of circular path. The value of rdrα{{{r_d}} \over {{r_\alpha }}}rα​rd​​ is equal to :
  1. A
    1
  2. B
    2
  3. C
    2\sqrt 22​
  4. D
    12{1 \over {\sqrt 2 }}2​1​
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