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A transmitting antenna of height h and ...

A transmitting antenna of height h and the receiving antenna of height 45 m are separated by a distance of 40 km of satisfactory communication in line of sight mode. Then the value of h is (given radius of earth is 6400 km)

A

15 m

B

20 m

C

30 m

D

25 m

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The correct Answer is:
B
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