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  1. Which factor determines whether the medium is free space, lossless dielectric, lossy dielectric or good conductor?

    2. A.
    Attenuation constant
    B.
    Constitutive parameters (σ, μ, ε)
    C.
    Loss tangent
    D.
    Reflection coefficient

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    Answer : Option C

    Explanation :

    Loss tangent

    (i) for lossless dielectric, tan θ ≤ 1

    (ii) for good conductor, tan θ >> 1

    (iii) for lossy dielectric, tan θ = 1.

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