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Magnetics question

2018 · Shift 0 · Q50
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Magnetics question

2018 · Shift 0 · Q50

JEE MainPhysicsMagneticsMCQ+4 / −1
An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii re, rp, r α_\alphaα​ respectively in a uniform magnetic field B. The relation between re, rp, r α_\alphaα​ is:
  1. A
    re < r α_\alphaα​ < rp
  2. B
    re > rp = r α_\alphaα​
  3. C
    re < rp = r α_\alphaα​
  4. D
    re < rp < r α_\alphaα​
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