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Science & Technology2011
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
  1. The orbit is geosynchronous.
  2. The orbit is circular.
  3. The orbit lies in the plane of the Earth’s equator.
  4. The orbit is at an altitude of 22,236 km.
Select the correct answer using the codes given below:

Explanation

The correct option outlines the conditions necessary for a satellite to be classified as having a geostationary orbit. A geostationary orbit is indeed geosynchronous, meaning it matches the Earth's rotational period, is circular for stable operation, and lies in the plane of the Earth's equator to maintain a fixed position relative to the Earth's surface. While it is true that geostationary orbits are typically located at an altitude of approximately 22,236 km, this altitude itself is not a condition defining the nature of the orbit; rather, it's a consequence of the other requirements. Therefore, selecting options 1, 2, and 3 captures the essence of a geostationary orbit while excluding the altitude specification, which is not a defining characteristic.

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