The minimum number of satellites required for worldwide communication between any two locations on earth's surface is-

The minimum number of satellites required for worldwide communication between any two locations on earth's surface is- Correct Answer 3

The correct answer is option 3) i.e. 3

CONCEPT:

  • Global positioning and communication by means of satellites require simultaneous observation by a number of satellites.
  • The number of satellites depends on the purpose or the degree of accuracy required in data.
  • It is said that one geostationary satellite can cover 1/3rd of the Earth's surface. 

EXPLANATION:

  • For a worldwide communication between any two locations of the earth, a minimum of 3 satellites must be placed such that each pair of satellites subtend an angle of 120o at the centre of the earth.

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