Question

Question #49b7a

Answer 1

Depends on the electromagnetic properties of the medium.

The wave velocity in the medium is given by,

`v = (muepsilon)^(-1/2)`
Where `mu` and `epsilon` is respectively the magnetic permeability and electric permittivity of the medium.

Thus as the wave enters a new medium, the velocity changes.

From the relationship, `nulamda = v` which holds for EM waves as well, on finds that `lamda` which is the wavelength also changes accordingly.

It may be noted that frequency `nu` remains constant when the wave passes from one medium to another.