engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Electromagnetic Waves The Traveling Electromagnetic Wave
A linearly polarized electromagnetic wave given as \(E =E_o \widehat i cos (kz -\omega t)\) is incident normally on a perfectly reflecting infinite wall at z = a. Assuming that the material of the wall is optically inactive, the reflected wave will be given as
1
\(E_r =-E_o \widehat i cos (kz -\omega t).\)
2
\(E_r =E_o \widehat i cos (kz +\omega t).\)
3
\(E_r =-E_o \widehat i cos (kz +\omega t).\)
4
\(E_r =E_o \widehat i sin (kz -\omega t).\)