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The loss tangent of a wave propagation with an intrinsic angle of 20 degree is

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The loss tangent of a wave propagation with an intrinsic angle of 20 degree is

(a) Tan 20

(b) Tan 40

(c) Tan 60

(d) Tan 80

This question was posed to me in a national level competition.

Question is taken from Loss Tangent in portion Maxwell Equations of Electromagnetic Theory

1 Answer

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Best answer
Right option is (b) Tan 40

The best explanation: The angle of the loss tangent δ is twice the intrinsic angle θn. Thus tan δ = tan 2θn = tan 2(20) = tan 40.

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