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GATE ECE 1994 | Question-18

A plane eelctromagnetic wave travelling along $+z$ - direction, has its electric field given by $\mathrm{E}_{x}=2 \cos \left({ }^{*} t\right)$ and $\mathrm{E}_{y}=2 \cos \left({ }^{*} t+90^{\circ}\right)$.
The wave is

  1. linearly polarised
  2. right circularly polarised
  3. left circularly polarised
  4. elliptically polarised

     

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