Q128 / 180 · COMEDK 2023 (Memory Based) · Physics

A TV tower has a height $72 \mathrm{~m}$. The maximum distance upto which TV transmission can be received is (Take, radius of the earth as $\left.6.4 \times 10^6 \mathrm{~m}\right)$

  • A
    27.52 km
  • B
    34.25 km
  • Correct answer
    C
    30.35 km
  • D
    25.12 km

Solution

The height of TV tower, $h=72 \mathrm{~m}$ The maximum distance upto which transmission can be received, $d=\sqrt{2 R h}=\sqrt{2 \times 6.4 \times 10^6 \times 72}=30.35 \mathrm{~km}$

Hence, the correct answer is option: 'C'.

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