CBSE 2024 · Region 5 · Set 1 · Q2 · 1 mark
A particle of mass $\displaystyle m$ and charge $\displaystyle \mathrm{q}$ describes a circular path of radius $\displaystyle \mathrm{R}$ in a magnetic field. If its mass and charge were $\displaystyle 2$ m and $\displaystyle \frac{\mathrm{q}}{2}$ respectively, the radius of its path would be
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 4$ R
Moving Charges and MagnetismMotion in a Magnetic FieldApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.