Due to presence of an em-wave whose electric component is given by E =100 sin (ω t - kx ) NC^-1, a cylinder of length 200 cm holds certain amount of…

Due to presence of an em-wave whose electric component is given by $\displaystyle \mathrm{E}=100 \sin (\omega \mathrm{t}-\mathrm{kx}) \mathrm{NC}^{-1}$, a cylinder of length $\displaystyle 200$ cm holds certain amount of em-energy inside it. If another cylinder of same length but half diameter than previous one holds same amount of em-energy, the magnitude of the electric field of the corresponding em-wave should be modified as