Physics · 2013
JEE Main · 22 April 2013, Shift 1 · Q1
Orbits of a particle moving in a circle are such that the perimeter of the orbit equals an integer number of de - Broglie wavelengths of the…
Orbits of a particle moving in a circle are such that the perimeter of the orbit equals an integer number of de - Broglie wavelengths of the particle. For a charged particle moving in a plane perpendicular to a magnetic field, the radius of the $\displaystyle \mathrm{n}^{\text {th }}$ orbital will therefore be proportional to :
Official answer
(3)
$\displaystyle n^{1 / 2}$
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.