A TV tower has a height of 20 m and radius of earth is $6.4 × 10^6 m$. The range of tower is:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 16 km
To calculate the range of a tower,
Distance, $d=\sqrt{2Rh}$
$=\sqrt{2×6.4×10^6×20}$
$=16,000m≃16km$