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Which of the following regions are present in the night time?

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Which of the following regions are present in the night time?

(a) D and E layers

(b) E and F layers

(c) F1 and F2 layers

(d) D and F layers

I had been asked this question during an online interview.

Asked question is from Radio Wave Propagation topic in chapter Radio Wave Propagation of Antennas

1 Answer

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Right option is (b) E and F layers

The best I can explain: During night time D layer is not present. F1 and F2 layers get combined to form an F layer during night time. So E and F layers are present at night time.

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