A proton, a deuteron and an $\alpha-$particle with same kinetic energy enter into a uniform magnetic field at right angle to magnetic field. The ratio of the radii of their respective circular paths is
A proton, a deuteron and an $\alpha-$particle with same kinetic energy enter into a uniform magnetic field at right angle to magnetic field. The ratio of the radii of their respective circular paths is
- [JEE MAIN 2022]
- A
$1: \sqrt{2}: \sqrt{2}$
- B
$1: 1: \sqrt{2}$
- C
$\sqrt{2}: 1: 1$
- D
$1: \sqrt{2}: 1$
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- [JEE MAIN 2021]