A geostationary satellite orbits Earth at a height where its period equals
A{'text': '24 hours', 'label': 'A'}
B{'text': '12 hours', 'label': 'B'}
C{'text': '30 days', 'label': 'C'}
D{'text': '1 year', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': '24 hours', 'label': 'A'}
1. A geostationary satellite appears fixed above a point on Earth's equator.
2. Its orbital period must equal Earth's rotation period ≈ 24 hours.
3. Orbital altitude works out to about 35,786 km above the surface.
4. It orbits in the equatorial plane in the same direction as Earth's rotation.
_Source: NCERT Class 11 Physics, Ch 7 "Gravitation", §7.6_
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