Physics · 2019
JEE Main · 9 January 2019, Shift 1 · Q23
A plane electromagnetic wave of frequency 50 MHz travels in free space along the positive x -direction. At a particular point in space and time, E…
A plane electromagnetic wave of frequency $\displaystyle 50$ MHz travels in free space along the positive $\displaystyle x$-direction. At a particular point in space and time, $\displaystyle \overrightarrow{\mathrm{E}}=6.3 \hat{j} \mathrm{~V} / \mathrm{m}$. The corresponding magnetic field $\displaystyle \overrightarrow{\mathrm{B}}$, at that point will be :
Official answer
(2)
$\displaystyle 2.1 \times 10^{-8} \hat{\mathrm{k}} \mathrm{~T}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.