Title: GR9677.054
Post by: conantee on December 08, 2010, 01:40:19 AM
Question 54-55 concern a plane electromagnetic wave that is a superposition of two independent orthogonal plane waves and can be written as the real part of ![\vec{E} = \hat{x} E_1 \exp(i[kz -\omega t]) +\hat{y} E_2 \exp(i[kz-\omega t +\pi])](/forums/Sources/latex/pictures/ed1843c1a91d6259f04fa6d7f6748fca.png "\vec{E} = \hat{x} E_1 \exp(i[kz -\omega t]) +\hat{y} E_2 \exp(i[kz-\omega t +\pi])")
, where 
and 
are real.
54. If
, the tip of the electric field vector will describe a trajectory that, as viewed along the z-axis from positive 
and looking toward the origin, is a
(A) line at
to the 
-axis
(B) line at
to the -axis
(C) clockwise circle
(D) counterclockwise circle
(E) random path
, where and are real.54. If
, the tip of the electric field vector will describe a trajectory that, as viewed along the z-axis from positive and looking toward the origin, is a(A) line at
to the -axis(B) line at
to the -axis(C) clockwise circle
(D) counterclockwise circle
(E) random path