Which one of the following statements is not the property of light?

$A$ wave is propagating in a medium of electric dielectric constant $2$ and relative magnetic permeability $50$. The wave impedance of such a medium is.....$ \Omega$

Select the correct statement from the following:

For a plane electromagnetic wave, the electric field is given by $\overrightarrow{E} = 90 \sin (0.5 \times 10^{3} x + 1.5 \times 10^{11} t) \hat{k} \text{ V/m}$. The corresponding magnetic field $\vec{B}$ will be

For an electromagnetic wave,the amplitude of the magnetic field is $3 \times 10^{-10} \, T$. The amplitude of the associated electric field is:

The ratio of the magnitudes of the electric field and $10^8$ times the magnetic field of a plane electromagnetic wave is