Propagation of electromagnetic waves
A TV tower has a height of 150m. By how much the minimum height (in meters) of the tower be increased so as to double the radius of its coverage range?
Coverage range of a TV tower is given by
where h is height of tower and R is radius of earth
Coverage range
To make r double, h is to be made 4 times.
So, the height of the tower is to be made 4 times of initial height =
The height to be increased from is
Therefore, the correct answer is 450.0
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