The refractive index and the permeability of a medium are and respectively. The relative permittivity of the medium is nearly
Step 1: Given data
Refractive index=
Permeability of a medium=
Step 2: Formula used
The refractive index of the medium is given by,
where, refractive index, speed of light, and speed of light in vacuum
Step 3: Compute the speed
Substitute the known values in the formula
Step 4: Compute the relative permittivity
It is understood that ,
where Permeability of a medium, relative permeability of the medium, permeability of the medium.
Substitute the known values in the formula,
Thus, the relative permittivity of the medium is .
Hence, option E is the correct answer.