CUET Preparation Today
CUET
Physics
Electromagnetic Waves
Electromagnetic wave travels with speed of 2.0 × 108 m/s in any medium of relative permeability (µr) 1.5. Find the relative permittivity of the medium (∈r)
1.25
1.50
2.25
2.50
Refractive Index n=cv=1.5
n2=μrϵr
ϵr=n2μr=1.521.5=1.5
