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Question: Answered & Verified by Expert
If the height of the transmitting tower is increased by $30 \%$, then the area covered by it increases by
PhysicsCommunication SystemAP EAMCETAP EAMCET 2018 (23 Apr Shift 2)
Options:
  • A 10\%
  • B $21 \%$
  • C $30 \%$
  • D $60 \%$
Solution:
1024 Upvotes Verified Answer
The correct answer is: $30 \%$
Area covered by a transmission tower of height $h$ is
$\begin{aligned}
& A=2 \pi R h \\
\Rightarrow \quad & A \propto h
\end{aligned}$
So, if height is increased by $30 \%$, area of coverage also increase by $30 \%$.

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