A linearly polarized electromagnetic wave in vacuum is $E=3.1 \cos \left[(1.8) z-\left(5.4 \times 10^{6}\right) {t}\right] \hat{\text { i }}\, {N} / {C}$ is incident normally on a perfectly reflecting wall at $z=a$. Choose the correct option
A linearly polarized electromagnetic wave in vacuum is $E=3.1 \cos \left[(1.8) z-\left(5.4 \times 10^{6}\right) {t}\right] \hat{\text { i }}\, {N} / {C}$ is incident normally on a perfectly reflecting wall at $z=a$. Choose the correct option
- [JEE MAIN 2021]
- 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 $3.1 \cos \left[(1.8) {z}+\left(5.4 \times 10^{6}\right) {t}\right] \hat{{i}}\, {N} / {C}$
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- [JEE MAIN 2021]
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- [JEE MAIN 2023]