Electromagnetic...

A long straight cable of lenght $$l$$ is placed symmetrically along z - axis has radius $$a(< < l)$$. The cable consists of a thin wire and a coaxial conducting tube. An alternating current $$I(t) = I_0 sin (2\pi\upsilon t) $$flows down the central thin wire and return along the coaxial conducting tube. The induced electric field at a distance s from the wire inside the cable is $$E(s, t) = \mu_oI_o\upsilon cos(2\pi \upsilon t)\ ln\left (\dfrac{s}{a} \right )\hat{k}$$. The displacement current density inside the cable is 

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Which among the following does not represent Maxwell's equation?

The ultra-high frequency band of radio waves in electromagnetic wave is used as in:

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Which of the following is not true for electromagnetic waves?

An electromagnetic wave radiates outwards from a dipole antenna, with $$E_0$$ as the amplitude of its electric field vector. The electric field $$B_0$$ which transports significant energy from the source falls off as

The part of the spectrum of the electromagnetic radiation used to cook food is then

The electric field of an electromagnetic wave traveling through the vacuum is given by the equation $$E=E_0\ sin (Kx-\omega t).$$ The quantity that is independent of wavelength is:

The matter-wave picture of electromagnetic wave/radiation elegantly incorporated the:

Which of the following electromagnetic waves is used in medicine to destroy cancer cells?

The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is: