Question

A T.V tower has a height of 100 m. How much population is covered by T.V broadcast, if the average population density around the tower is 1000/ km²? (R = 6400 km)

विकल्प

• 40.19 × 10⁵

• 19.5 × 10⁶

• 29.5 × 10⁷

• 9 × 10⁴

Answer 1

40.19 × 10⁵

Explanation:

d = `sqrt(2"RH")`

N = πd²σ

= 2πRh σ

= 2 × 3.14 × 6400 × 0.1 × 1000

= 2 × 3.14 × 6.4 × 10⁵

= 40.19 × 10⁵