A linearly polarized electromagnetic wave in vacuum is \( \vec{E}=3.1\cos\!\left[(1.8)z-(5.4\times 10^{6}) t\right]\\,\hat{i}\ \text{N}/\text{C} \) is incident normally on a perfectly reflecting wall at \( z=a \). Choose the correct option
The reflected wave will be \( 3.1\cos\!\left[(1.8)z+(5.4\times 10^{6}) t\right]\\,\hat{i}\ \text{N}/\text{C} \)
The wavelength is \( 5.4 \ \text{m} \)
The frequency of electromagnetic wave is \( 54\times 10^{4} \ \text{Hz} \)
The transmitted wave will be \( 3.1\cos\!\left[(1.8)z-(5.4\times 10^{6}) t\right]\\,\hat{i}\ \text{N}/\text{C} \)
