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Satellites

The minimum n...

Question

The minimum number of satellites needed to be placed for world-wide communication between any two locations on earth's surface is:

A

6

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B

4

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C

3

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D

5

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Solution

The correct option is A 3
For a world-wide communication between any two locations of the earth, minimum 3 satellites must be placed such that each pair of the satellites subtend angle of $120^{o}$ at the centre of earth.

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