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Communication Systems

Q1:

At night the ionosphere can be considered to be consisting of

A D, E, F1 and F2 layers

B D, E, F1 layers

C D, E, F2 layers

D E and F2 layers

ANS:D - E and F2 layers

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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