Q65. The electric field of an electromagnetic wave is given by E = 3sin (kz - ot)+ 4 cos(kz-ot ) The wave is (a) linearly polarized at an angle tan from the x- axis (b) linearly polarized at an angle tan from the x- axis (c) elliptically polarized in clockwise direction when seen travelling towards the observer (d) elliptically polarized in counter-clockwise direction when seen travelling towards the observer Ans. (d)