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The distance of coverage of a transmitti...

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)

A

6.4 m

B

12.8 m

C

3.2 m

D

16 m

Text Solution

Verified by Experts

The correct Answer is:
B
Given d = 12.8 km, R = 6400 km
We have `d = sqrt(2 hR)`
`h = (d^(2))/(2R)`
`= ((12.8)^(2))/(2 xx 6400) = 12.8 m`
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