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What should be the height of transmittin...

What should be the height of transmitting antenna if the T.V. telecast is to cover of a radius of `128 km`?
Radius of earth` = 6.4 xx 10^(6) m`.

A

128 m

B

1280 m

C

100 m

D

1500 m

Text Solution

Verified by Experts

The correct Answer is:
B
Height of transmitting antenna is given by
`h=(d^(2))/(2R)=((128xx10^(3))^(2))/(2xx6.4xx10^(6))`
where, R = radius of earth
`=6.4xx10^(6)mimpliesh=1280" m"`
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