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Science · 2024 · 1 mark
CBSE 2024 · Region 2 · Set 3 · Q15
The speed of light in vacuum is 3 × 10^8 m / s. If the speed of light in a medium is 2.25 × 10^8 m / s, the absolute refractive index of the medium…
The speed of light in vacuum is $\displaystyle 3 \times 10^{8} \mathrm{~m} / \mathrm{s}$. If the speed of light in a medium is $\displaystyle 2.25 \times 10^{8} \mathrm{~m} / \mathrm{s}$, the absolute refractive index of the medium is :
Official answer
(C)
$\displaystyle \frac{4}{3}$
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CBSE Class 10 Science past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.