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Discussion :: Communication Systems

  1. At night the ionosphere can be considered to be consisting of

    2. A.
    D, E, F1 and F2 layers
    B.
    D, E, F1 layers
    C.
    D, E, F2 layers
    D.
    E and F2 layers

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    Answer : Option D

    Explanation :

    During night D layer is almost absent. Moreover F1 and F2 layers merge to form single F2 layer. Hence only D and F2 layers at night.

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