A plane electromagnetic wave travels... | Electromagnetic Waves | JEE Main 2022

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JEE MAIN 2022

24-06-22 S1

Question

A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of magnetic intensity is$4.5 \times 10^{-2} \mathrm{Am}^{-1}$ at a point, what will be the approximate magnitude of electric field intensity at that point ?
(Given: permeability of free space $\mu_0=4 \pi \times 10^{-7} \mathrm{NA}^{-2}$, speed of light in vacuum $\mathrm{c}=3 \times 10^8 \mathrm{~ms}^{-1}$ )

Select the correct option:

A

$16.96 \mathrm{Vm}^{-1}$

B

$2.25 \times 10^{-2} \mathrm{Vm}^{-1}$

C

$8.48 \mathrm{Vm}^{-1}$

D

$4.2 \times 10^6$

✓ Correct! Well done.

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