Question: Q. 1. (i) What is line of sight communication?
(ii) Why is it not possible to use sky waves for transmission of TV signals? Upto what distance can a signal be transmitted using an antenna of height ’
R [2017 Delhi set-3]
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Solution:
Ans. (i) Communication, using waves which travel in straight line from transmitting antenna to receiving antenna is called line of sight communication.
(ii) Because T.V. signal waves are not reflected back by the ionosphere
[CBSE Marking Scheme, 2017]
