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NEET Questions / Physics / Communication System / Communication Systems
A ground receiver station is receiving a signal at 5 MHz, transmitted from a ground transmitter at a distance of 200 km. Considering the surface wave propagation, what is the approximate height of the transmitting antenna required for efficient communication if the earth's radius is 6400 km?
96 m
192 m
384 m
768 m
If the area to be covered for TV telecast is doubled, then height of transmitting antenna (TV tower) will have to be
Doubled
Increased by a factor of sqrt(2)
Halved
Increased by a factor of 4
The distance of coverage of a transmitting antenna is 12.8 km. Then, the height of the antenna is (Given that radius of earth = 6400 km)
6.4 m
12.8 m
3.2 m
16 m
The distance of coverage of a transmitting antenna is 12.8 km. Then, the height of the antenna is (Given that radius of earth = 6400 km)
6.4 m
12.8 m
3.2 m
16 m
