Last Updated On 16-03-2023 - By Jeesha Sara
A TV transmission tower has a height of 140m and the height of the receiving antenna is 40m. what is the maximum distance upto which signals can be broadcasted from this tower in LOS(Line of sight ) mode? (Given: radius of earth =6.4
m).
(a)
80km
(b)
48 km
(c)
40km
(d)
65 km
A TV transmission tower has a height of 140m and the height of the receiving antenna is 40m. what is the maximum distance upto which signals can be broadcasted from this tower in LOS(Line of sight ) mode? (Given: radius of earth =6.4 m).
(a)
80km
(b)
48 km
(c)
40km
(d)
65 km
Question ID - 50236 :-
A TV transmission tower has a height of 140m and the height of the receiving antenna is 40m. what is the maximum distance upto which signals can be broadcasted from this tower in LOS(Line of sight ) mode? (Given: radius of earth =6.4 m).
(a)
80km
(b)
48 km
(c)
40km
(d)
65 km
|
A TV transmission tower has a height of 140m and the height of the receiving antenna is 40m. what is the maximum distance upto which signals can be broadcasted from this tower in LOS(Line of sight ) mode? (Given: radius of earth =6.4 |
|||
|
(a) |
80km |
(b) |
48 km |
|
(c) |
40km |
(d) |
65 km |
Maximum distance upto which signal can be broadcasted is :
=
Where 
are heights of transmitter tower and height of receiver respectively.
Putting all values
On solving, 
=65km
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and internal resistance r, A cell C having emfε/2 and internal resistance 3r is connected. The length AJ at which the galvanometer as shown in fig. shows no deflection is
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