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Answer the following questions : (b) I...

Answer the following questions :
(b) It is necessary to use satellites for long distance TV transmission. Why ?

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Generally TV waves have frequency range 100 - 200 MHz or even more and penetrate the ionosphere and are not reflected back. As space wave they can cover a distance of 50 - 60 km only. Therefore, for long distance TV transmission, we make use of satellites which reflect the TV signal wave back towards the earth.
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