CBSE 2025 · Region 4 · Set 3 · Q7 · 1 mark
In an electromagnetic wave travelling in free space, the amplitude of magnetic field is $\displaystyle 6.0 \times 10^{-4} \mathrm{~T}$. The amplitude of its electric field is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 1.8 \times 10^{5} \mathrm{Vm}^{-1}$
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CBSE Class 12 Physics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.