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Photoelectric Effect

A transmittin...

Question

A transmitting antenna is at a height of 40 m and the receiving antenna is at a height of 60 m. The maximum distance between them for satisfactory communication is nearly

A

22.5 km

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B

27.5 km

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C

50 km

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D

25 km

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Solution

The correct option is C
50 km

$d_{m} = \sqrt{2 R h_{T}} + \sqrt{2 R h_{R}}$

Where R = Radius of earth

$h_{T} & h_{R}$ are heights of transmitting antenna & receiving respectively

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