CBSE 2026 · Region 4 · Set 1 · Q7 · 1 mark
The ratio of amplitude of electric field to the amplitude of the magnetic field associated with an electromagnetic wave propagating in glass $\displaystyle (\mathrm{n}=1 \cdot 5)$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 2 \times 10^{8} \mathrm{~ms}^{-1}$
Electromagnetic WavesApplymcqmedium
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CBSE Class 12 Physics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.