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- IIT JAM
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If the electric field of an electromagnetic wave is given by e(r, t) = (ie, + je, )e.-); i and are mutually orthogonal unit vectors both being perpendicular to
if the electric field of an electromagnetic wave is given by E(r, t) = (iE, + jE, )e.-); i and are mutually orthogonal unit vectors both being perpendicular to k and E, and E, are two real numbers, then the electromagnetic wave is/are not 2 (A) Plane polarized (B) Circularly polarized (C) Elliptically polarized (D) Unpolarized
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Prashant kumar![best-answer]()
option C Since the angle between two components of electric field is 90 degree and components are unequal therefore it is elliptical polarized. if E1=E2 then it will be plane polarized. and if only one component is given or angle between these component other then 90 degree then also this may be plane polarized.
how do I recognise circular polarization??
E1i= E1Sin theta and E2j= E2Cos theta Square and add if you get equation of circle then it is circular polarized if that are equation of ellipse then it is elliptical polarized. in this question E1 not equal to E2 therefore we shall get equation of ellipse on squaring if E1= E2 then it will be equation of circle it will be circular polarized