CBSE 2025 · Region 4 · Set 1 · Q7 · 1 mark
The amplitude of electric field in an electromagnetic wave in free space is $\displaystyle 1000 \mathrm{Vm}^{-1}$. The amplitude of the magnetic field in this electromagnetic wave is:
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle 3.33 \times 10^{-6} \mathrm{~T}$
Electromagnetic WavesApplymcqeasy
More from Electromagnetic Waves
- The ratio of amplitude of electric field to the amplitude of the magnetic field associated with an…2026 · asked 3×
- The magnetic field in a plane electromagnetic wave travelling in glass (n=1 · 5) is given by B y=(2 × 10^-7…2026 · asked 3×
- A plane electromagnetic wave travels through a medium and the magnetic field associated with it is given by…2026 · asked 3×
- How are infrared waves produced? Why are these waves referred to as heat waves? Give any two uses of infrared…2023 · asked 3×
- What is meant by the term 'displacement current'? Briefly explain how this current is different from a…2023 · asked 3×
- Identify electromagnetic waves which: (i) are used in radar system. (ii) affect a photographic plate. (iii)…2022 · asked 3×
- Which of the following electromagnetic waves has photons of largest momentum?2025 · asked 3×
- (i) Depict a plane electromagnetic wave propagating along the x-axis. Write the expressions for its…2022 · asked 3×
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.