Discussion :: Exam Questions Paper
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The electric field of uniform plane wave is given by E = 20 sin (2 p x 108t- pz)
x + 20 cos (2 p x 108t - pz) y. The polarization of wave is
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A.
Elliptical, left handed
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B.
Circular, left handed
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C.
Elliptical, right handed
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D.
Circular, right handed
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Answer : Option B
Explanation :
The given two components are equal in amplitude, perpendicular and out of phase by 90°.
∴ The wave is circularly polarized.
Now we consider z = 0 and put t = 0 and 
∴ At t = 0, E = 10ay
At t 
∴ Left circularly polarized.
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