Modern Physics 7 Question 11
11. In a line of sight radio communication, a distance of about 50 is kept between the transmitting and receiving antennas. If the height of the receiving antenna is , then the minimum height of the transmitting antenna should be
(Radius of the earth
(a)
(b)
(c)
(d)
(Main 2019, 8 April II)
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Solution:
- Key Idea In line of sight communication, distance
between transmitting antenna and receiving antenna is given by
Here in figure,
Given,
Then, distance between transmitting and
receiving antenna, i.e.