Fundamentholfundamenthol
JEE Main2019Physics
Q.

A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbits in a plane due to magnetic field perpendicular to the plane. Let rp, re and rHe be their respective radii, then,

  1. A

    re < rp < rHe

  2. B

    re > rp = rHe

  3. C

    re < rp = rHe

  4. D

    re > rp > rHe

Solution

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