CBSE 2024 · Region 2 · Set 1 · Q1 · 1 mark
Two charged particles $\displaystyle \mathrm{P}$ and $\displaystyle \mathrm{Q}$, having the same charge but different masses $\displaystyle \mathrm{m}_{\mathrm{P}}$ and $\displaystyle \mathrm{m}_{\mathrm{Q}}$, start from rest and travel equal distances in a uniform electric field $\displaystyle \overrightarrow{\mathrm{E}}$ in time $\displaystyle \mathrm{t}_{\mathrm{P}}$ and $\displaystyle \mathrm{t}_{\mathrm{Q}}$ respectively. Neglecting the effect of gravity, the ratio $\displaystyle \left(\frac{\mathrm{t}_{\mathrm{P}}}{\mathrm{t}_{\mathrm{Q}}}\right)$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \sqrt{\frac{\mathrm{m}_{\mathrm{P}}}{\mathrm{m}_{\mathrm{Q}}}}$
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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.