A TV tower has a height of 100 m. How much population is covered by the TV broadcast if the average population density around the tower is 100 km−2 (radius of the earth= 6.37 × 106 m)
Answer & explanation
Correct answer: option 4
$ d = \sqrt{2hR}$
Population covered
$= \pi d^2 ×$ population density
$= 3.114 × ( 2 × 0.1 × 6.37 × 10^3) × 1000 ≈ 40 lakh$