10.2. Consider the plane interface between two perfect dielectric media defined by y = -2x. The

relative permittivity for y < -2x is &1 = 2, while for y> -2x it is &2=3. The displacement field D

for medium 1 at the boundary is D₁ = 4a-6ay (C/m²). Determine the displacement field D₂ in

1

medium 2 at the boundary. Find the angle between Di and the surface normal and the angle

0₂ between D₂ and the surface normal.