The electric field in an electromagnetic wave is given by $E =56.5 \sin \omega( t - x / c ) \;NC ^{-1}$. Find the intensity of the wave if it is propagating along $x-$axis in the free space. (Given $\left.\varepsilon_{0}=8.85 \times 10^{-12} \;C ^{2} N ^{-1} m ^{-2}\right)$
The electric field in an electromagnetic wave is given by $E =56.5 \sin \omega( t - x / c ) \;NC ^{-1}$. Find the intensity of the wave if it is propagating along $x-$axis in the free space. (Given $\left.\varepsilon_{0}=8.85 \times 10^{-12} \;C ^{2} N ^{-1} m ^{-2}\right)$
- [JEE MAIN 2022]
- A
$5.65 \;Wm ^{-2}$
- B
$4.24 \;Wm ^{-2}$
- C
$1.9 \times 10^{-7} \;Wm ^{-2}$
- D
$56.5 \;Wm ^{-2}$
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- [JEE MAIN 2021]