For a plane wave propagating in an unbounded medium (say, free space), the minimum angle between electric field and magnetic field vectors is

Question

Question

This question was previously asked in

ESE Electronics 2012 Paper 1: Official Paper

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Answer 1

Concept:

Loss tangent is given by

\(\tan \theta = \frac{\sigma }{{\omega }}\)

And angle between E and H is: \({\theta _n} = \frac{\theta }{2}\)

Analysis:

For a plane wave propagating in an unbounded medium, the angle between the electric field and magnetic field is always 90°