engineering recuitment JSSC JE Mock Test 2023 Electromagnetic Theory Electrostatics Electric Field in Material
A uniform plane wave in free space with an electric field \({\vec E_1} = 2{\vec a_x} + {\vec a_y} - 3{\vec a_z}\) incident normally on the non-magnetic dielectric slab (x ≥ 0). In a dielectric, if the velocity of the wave is 25% of the velocity of light then the expression for the electric field in the dielectric slab is
1
\({\vec a_x} + {\vec a_y} - 3{\vec a_z}\)
2
\(4{\vec a_x} + {\vec a_y} - 3{\vec a_z}\)
3
\(0.125{\vec a_x} + \;{\vec a_y} - 3\vec a\)
4
\(0.250{\vec a_x} + {\vec a_y} - 3{\vec a_z}\)