Railways PYQCBT 2 2017

RRB NTPC · Question 50

How much time does a Geostationary satellite take to complete one orbit, at the height of 35790 km?

  1. 30 days

  2. 24 hours

  3. 365 days

  4. 12 hours

Show answer & explanation

Answer: (B) 24 hours

Explanation

A geostationary satellite orbits at about 35,786 km above the equator and completes one revolution in the time Earth takes to rotate once – about 24 hours (more exactly one sidereal day) – so it appears fixed over one spot.