Electromagnetic Waves Questions

The electric field in a plane electromagnetic wave is given by $E_z=60\cos (5x+1.5\times 10^{9}t)\text{ V/m}$. Then expression for the corresponding magnetic field is:

If λv, λx andλm represent the wavelengths of visible light, X-rays and microwaves respectively, then :

If λv, λx and λm represent the wavelengths of visible light, X-rays and microwaves respectively, which of the following relations is correct ?

The pressure exerted by an electromagnetic wave of intensity $I({\text{watt/m}}^2)$ on a nonreflecting surface is [$c$ is the velocity of light]:

The energy of the em waves is of the order of $15\text{keV}$. To which part of the spectrum does it belong?

Out of the following options which one can be used to produce a propagating electromagnetic wave?

A $100\Omega$ resistance and a capacitor of $100\Omega$ reactance are connected in series across a $220\text{V}$ source. When the capacitor is $50\%$ charged, the peak value of the displacement current is: