Question

A linearly polarized electromagnetic wave in vacuum is $E=3.1 \cos \left(1.8\right) z-\left(5.4 \times 10^{6} \right)$ incident normally on a perfectly reflecting wall at $z=a$. Choose the correct option

• A. The wavelength is $5.4\, m$
• B. The frequency of electromagnetic wave is $54 \times 10^{4} Hz$
• C. The transmitted wave will be $3.1 \cos \left[(1.8) z-\left(5.4 \times 10^{6}\right) t\right] \hat{i} N / C$
• D. The reflected wave will be $3.1 \cos \left[(1.8) z+\left(5.4 \times 10^{6}\right) t\right] \hat{i} N / C$

Answer 1

Answer: (D)

Reflected wave will have direction opposite to incident wave.