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Physics · 2025 · 1 mark
CBSE 2025 · Region 7 · Set 2 · Q10
The mass numbers of two nuclei A and B are 27 and 64 respectively. The ratio of their radii ((r_A)/(r_B)) will be:
The mass numbers of two nuclei A and B are $\displaystyle 27$ and $\displaystyle 64$ respectively. The ratio of their radii $\displaystyle \left(\frac{r_{A}}{r_{B}}\right)$ will be :
Official answer
(D)
$\displaystyle \frac{3}{4}$
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CBSE Class 12 Physics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.