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Question

Question: What should be height of transmitting antenna if the T.V. telecast is to cover a radius of 128 km?...

What should be height of transmitting antenna if the T.V. telecast is to cover a radius of 128 km?

A

1560 m

B

1280 m

C

1050 m

D

79 m

Answer

1280 m

Explanation

Solution

h = d22R\frac{d^{2}}{2R} = 128×1282×6400\frac{128 \times 128}{2 \times 6400} = 1.28 km