The time period of communication satellites is:
Correct answer: D. 24 hours
- A. 1 hour
- B. 2 hour
- C. 12 hours
- D. 24 hours
Explanation
24 hours: This option is correct. Geostationary communication satellites orbit the Earth at a height of about 35,786 kilometers, taking 24 hours to complete one orbit. This allows them to remain fixed in the sky relative to an observer on Earth, providing continuous communication coverage.
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About Satellite Motion and Orbital Velocity
Satellite motion uses gravitational force as the centripetal force required for circular orbit, giving relationships among orbital radius, period and orbital velocity. Questions cover geostationary conditions and weightlessness, while distinguishing orbital velocity, escape velocity and the satellite's tangential speed.
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