Electromagnetic...

An electromagnetic wave propagating in free space is incident on the surface of a dielectric medium (μ₀, 4ϵ₀). If the magnitude of the electric field of the incident wave is E₀, then what will be the magnitude of the electric field of the reflected wave?

The plane wave propagating through the dielectric has the magnetic field component as H = 20 e^-ax cos (ωt – 0.25x) a_y A/m (a_x, a_y, a_z are unit vectors along x, y, and z-axis respectively)

In a good conductor the phase relation between the tangential components of electric field E_t and the magnetic field H_t is as follows

Which of the following fields that exist in the charge free regions is/are possible electromagnetic fields:

Suppose we wish to communicate with the submarines using a conventional communication system at 1 MHz. Properties of seawater are ϵ = 81 ϵ₀ (F/m), μ = μ₀ (H/m) and σ = 4 S/m. Assuming that a magnetic field intensity of 10,000 A/m can be generated at the surface of the ocean and that the receiver in the submarine can receive magnetic fields as low as 1μA/m. The maximum range for this communication system is ____________ m.(upto 2 decimal places)