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JEE Main202117 Mar 2021Morning ShiftPhysicsCommunication SystemActual

For VHF signal broadcasting, _______ km 2 of maximum service area will be covered by an antenna tower of height 30 m , if the receiving antenna is placed at ground. Let radius of the earth be 6400 km . (Round off to the Nearest Integer) (Take π as 3 . 14 )

Correct answer

0

Step-by-step solution

d = 2 R h A = π d 2 A = π 2 R h = 3 . 14 × 2 × 6400 × 30 1000 A = 1205 . 76   km 2 A ≃ 1206   km 2

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