Electromagnetic Waves

JEE Main level, single correct, medium

130 of 165

Question 130 of 165

A plane electromagnetic wave in a non-magnetic dielectric medium is given by E⃗=E⃗0(4×10−7x−50t)\vec{E}=\vec{E}_0\left(4 \times 10^{-7} x-50 t\right) with distance being in meter and time in seconds. The dielectric constant of the medium is :

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Answer: (B) 5.85.8

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