Two semi-infinite dielectric regions are separated by a

Two semi-infinite dielectric regions are separated by a plane boundary at y = 0. The dielectric constant of region 1 (y < 0) and region 2 (y > 0) are 2 and 5, Region 1 has uniform electric field ^{^→}E = 3a_x̂ + 4a_ŷ + 2a_ẑ , where a_x̂ , a_ŷ and a_ẑ are unit vectors along the x, y and z axis, respectively. The electric field region 2 is

1. 3a_x̂ + 1.6a_ŷ + 2a_ẑ
2. 1.2a_x̂ + 4a_ŷ + 2a_ẑ
3. 1.2a_x̂ + 4a_ŷ + 0.8a_ẑ
4. 3a_x̂ + 10a_ŷ + 0.8a_ẑ

E₁ = 3ax + 4ay + 2az

E₂ = 3a_x +	2	(4a_y) + 2a_z
	5

∴ E₂ = 3a_x + 1.6a_y + 2a_z