The electric field and the magnetic field components of an electromagnetic wave travelling in vacuum are represented as E = m sin (α z -β t ) B = n…

The electric field and the magnetic field components of an electromagnetic wave travelling in vacuum are represented as $\displaystyle \mathrm{E}=\mathrm{m} \sin (\alpha \mathrm{z}-\beta \mathrm{t})$ $\displaystyle \mathrm{B}=\mathrm{n} \sin (\alpha \mathrm{z}-\beta \mathrm{t})$ where m, n, $\displaystyle \alpha$ and $\displaystyle \beta$ are constants characterising the wave. Then