question_answer 30)

  A TV transmission tower antenna is at a height of 20 m. How much service area can it cover if the receiving antenna is (i) at ground level, (ii) at a height of 25 m? Calculate the percentage increase in area covered in case (ii) relative to case (i).

Answer:

                  Here, h1=20m, h2=25m (i) Area covered, A                   (ii) Range, Area covered, % increase in area