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Which of the following frequencies will ...

Which of the following frequencies will be suitable for beyond the horizon communication using sky waves?

A

10 kHz

B

10 MHz

C

1 GHz

D

1000 GHz

Text Solution

Verified by Experts

The waves of frequency 10 KHz travel along ground and are absorbed by the earth after some distance. The waves of frequencies more than 30MHz are not reflected back by ionosphere of earth's atmosphere. Therefore, far beyond the horizon communication, the frequency 10 MHz is used.
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