JEE Main 28 Jan 2025 Shift 1 Paper

Due to presence of an em-wave whose electric component is given by E=100sin‌(ωt−kx)NC−1, a cylinder of length 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