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Physics · 2025 · 1 mark
CBSE 2025 · Region 4 · Set 3 · Q7
In an electromagnetic wave travelling in free space, the amplitude of magnetic field is 6.0 × 10^-4 T. The amplitude of its electric field is:
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
(C)
$\displaystyle 1.8 \times 10^{5} \mathrm{Vm}^{-1}$
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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.