science medium mcq

The escape velocity from Earth's surface is approximately:

  1. 7.9 km/s
  2. 11.2 km/s
  3. 16.7 km/s
  4. 22.4 km/s

Answer: 11.2 km/s

Escape velocity v_e = √(2GM/R) ≈ 11.2 km/s for Earth. Orbital velocity is ~7.9 km/s. Critical for space mission planning. [[NCERT Physics Class 11]]

Topic Physics - Gravitation
Exam Relevance UPSC NDA, SSC JE, Railway NTPC

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