NEET Physics Orbital Motion MCQ Question
If a satellite is in a circular orbit around the Earth with a radius of 10,000 km, what is its orbital speed? (Use G = 6.67 x 10^-11 N m²/kg², M_E = 5.97 x 10^24 kg)
7.90 km/s
5.79 km/s
98 km/s
11.2 km/s
Correct Answer
Detailed Explanation
The orbital speed v can be calculated using the formula v = √(G*M_E/R). Substituting the given values, v = √((6.67 x 10^-11) * (5.97 x 10^24) / (10,000,000)) ≈ 7.90 km/s.
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