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Which of the following statements correctly describes the properties of a geosynchronous satellite?

Difficulty: Easy

Correct Answer: All of the above

Explanation:


Introduction / Context:
A geosynchronous satellite is one that has an orbital period equal to the rotation period of the Earth. These satellites are commonly used in communications, broadcasting, and weather monitoring because they provide a fixed coverage area relative to Earth's surface.


Given Data / Assumptions:

  • Orbital period of geosynchronous satellites = 24 hours (same as Earth's rotation).
  • Orbit is nearly circular to maintain constant altitude and speed.
  • They are positioned above the equatorial plane.


Concept / Approach:
For a satellite to appear stationary or maintain a fixed footprint, it must match Earth's rotation period, orbit circularly, and move in the equatorial plane. Only under these conditions does it achieve geosynchronous status.


Step-by-Step Solution:

Period = Earth's rotation = 24 hours.Orbit = Circular → ensures constant distance and coverage.Plane = Equatorial → ensures no north-south drift relative to Earth.


Verification / Alternative check:

Satellite dynamics textbooks confirm that geosynchronous satellites must meet all three conditions simultaneously.


Why Other Options Are Wrong:

Each individual option is true, but only “All of the above” captures the complete definition.


Common Pitfalls:

Confusing “geosynchronous” with “geostationary”—all geostationary satellites are geosynchronous, but not all geosynchronous satellites are geostationary unless equatorial and circular.


Final Answer:

All of the above
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