NCERT Class XII Chapter
Communication Systems
Questions With Solutions
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Question : 1
Total: 8
Which of the following frequencies will be suitable for beyond-thehorizon communication using sky waves?
Solution:
10 MHz will be suitable frequency for sky waves as lower frequency of 10 kHz will require large radiating antenna and higher frequencies 1 GHz and 1000 GHz will pass through the ionosphere and will not be reflected by it.
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