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Which polarization is possible for an electromagnetic wave?

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in Analog Communications by (122k points)
Which polarization is possible for an electromagnetic wave?

(a) vertical

(b) circular

(c) horizontal

(d) can be vertical or horizontal or circular

The question was asked during an interview.

The origin of the question is ZCD in portion Angle Modulation of Analog Communications

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Correct choice is (d) can be vertical or horizontal or circular

Easiest explanation: In electromagnetic waves, both electric and magnetic fields are present. Polarization states the orientation of electric flux lines in EM field. Thus it can be vertically polarized or horizontally or circularly polarized.

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