JEE PYQ: Communication System Question 28
Question 28 - 2019 (10 Jan 2019 Shift 1)
A TV transmission tower has a height of 140 m and the height of the receiving antenna is 40 m. What is the maximum distance upto which signals can be broadcasted from this tower in LOS mode? (Given: radius of earth $= 6.4 \times 10^6$ m).
(1) 65 km
(2) 48 km
(3) 80 km
(4) 40 km
Show Answer
Answer: (1)
Solution
$d_{max} = \sqrt{2Rh_T} + \sqrt{2Rh_R} = \sqrt{2 \times 6.4 \times 10^6}[\sqrt{140} + \sqrt{40}] = 65$ km.
BETA
