The geostationary satellite completes its one revolution in ________.

  1. 48 hr
  2. 24 hr
  3. 12 hr
  4. 32 hr

Answer (Detailed Solution Below)

Option 2 : 24 hr
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Detailed Solution

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CONCEPT:

  • Geostationary satellite: This is an earth-orbiting satellite that is placed at a fixed altitude directly over the equator.
    • It revolves west to east that is the same direction the earth rotates.
    • It takes 24 hours to complete one revolution of the earth by satellite, that is the same time as the earth takes to rotate once on its axis.
    • This satellite appears nearly stationary in the sky when seen from the ground. That's why the name geostationary.


EXPLANATION:

  • Since geostationary satellite takes the same time to move around the earth as the earth takes to rotate on its axis.
  • So, geostationary satellite completes one complete revolution in 24 hr around the earth.
  • Hence the correct answer is option 2.

Important Points

  • Another satellite is a geosynchronous satellite.
  • The main difference between geosynchronous and geostationary satellites is that While the geostationary orbit lies on the same plane as the equator, the geosynchronous satellites have a different inclination.
  • Both Complete one orbit in 24 hr.

F1 J.K 23.7.20 Pallavi D4

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