A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbitals in a plane due to magnetic field perpendicular to the plane. Let $r_p, r_e$ and $r_{He}$ be their respective radii, then
A proton, an electron, and a Helium nucleus, have the same energy. They are in circular orbitals in a plane due to magnetic field perpendicular to the plane. Let $r_p, r_e$ and $r_{He}$ be their respective radii, then
- [JEE MAIN 2019]
- A
$r_e > r_p = r_{He}$
- B
$r_e > r_p > r_{He}$
- C
$r_e < r_p < r_{He}$
- D
$r_e < r_p = r_{He}$
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