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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 redius 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
`d_T=sqrt((2Rh_T))`
`implies h_T =(d_T^2)/(2R) = ((12.8 xx10^3)^2)/(2xx6400 xx10^3)=h_T=12.8m `
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