Which of the following are not electromagnetic waves?

Phase velocity of EM waves having relative permitivity of 9 and frequency of 6Mhz ?

The power of a wave with an electric field intensity of 7.5 units in air is ______.

The distance of the conductor when the cross-sectional area is 20 m² and the length is 12.62 m.

When a compact disc is illuminated by white light, colored lines are observed. This is due to:

A radar receives an echo from a target 20 μsec after sending the signal. What is the approximate range of the target (in km)?

The cross product of the electric (E) and magnetic (H) components of an electromagnetic (EM) wave is 3+9j. Find the power of the EM wave.

The susceptibility of a magnetic substance is found to depend on temperature and the strength of the magnetizing field. The material is a:

A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m² with a velocity of 50 m/s. The induced emf in the conductor will be _____ V

Electric intensity at a point is defined as the force experienced per unit positive charge at a point placed in the electric field.