The electric field of a monochromatic plane wave travelling in a lossless isotropic and homogenous medium is given by

$$ \vec{E}(z, t)=E_0[\hat{x} \cos (\omega t-k z)+\hat{y} \sin (\omega t-k z)] $$

in a right-handed orthogonal co-ordinate system.

Which of the following is the correct polarization of the electromagnetic wave?

Which option(s) represents/ represent the dielectric loss tangent of a substrate?

The cutoff frequency (in GHz ) for the dominant $\mathrm{TE}_{10}$ mode of an air-filled rectangular waveguide of inner dimension 0.28 inch $\times 0.14$ inch is $\_\_\_\_$ .

(rounded off to two decimal places).

For a lossless passive two-port network, $\left|S_{11}\right|$ and $\left|S_{21}\right|$ intersect at -3 dB .

For a lossy passive two-port network, $\left|S_{11}\right|$ and $\left|S_{21}\right|$ intersect at -4 dB ..

The percentage of power dissipated in the lossy network at the intersection frequency is $\_\_\_\_$ .

(rounded off to two decimal places)