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  1. A uniform plane wave travelling in air is incident on the plane boundary between air and another dielectric medium with er = 15. The reflection coefficient for normal incidence is

    2. A.
    0.6 ∠0°
    B.
    1 ∠0°
    C.
    0.6 ∠180°
    D.
    1.2 ∠180°

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    Answer : Option C

    Explanation :

    Coefficient =

    ∴ Coefficient = 0.6 ∠180°.

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