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PhysicsJEE Main 2 Apr 2026, Shift 2·Q6·MCQ·Easy–moderate

Gravitation · Potential energy, potential, escape, satellites

If a body of mass 1 kg falls on the earth from infinity, it attains velocity (v) and kinetic energy (kk) on reaching the surface of earth. The values of v and k respectively are . (Take radius of earth to be 6400 km and g=9.8 m/s2g = 9.8\ \mathrm{m/s^2})
  1. (1)11.2 km/s; 6.27×1076.27\times10^{7} J
  2. (2)11.2 km/s; 12.54×10712.54\times10^{7} J
  3. (3)8.8 km/s; 6.27×1076.27\times10^{7} J
  4. (4)8.8 km/s; 12.54×10712.54\times10^{7} J

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