OnlineCBT
Physics · GRAVITATION
हिन्दीConsider the following statements regarding an orbiting satellite around the Earth: (A) The total mechanical energy of a satellite orbiting at finite distance is always negative. (B) The kinetic energy of a satellite in a circular orbit is equal to half the magnitude of its gravitational potential energy. (C) If the total energy of a satellite becomes zero or positive, it escapes to infinity. (D) In an elliptical orbit, both kinetic energy and potential energy remain constant throughout the orbit. Which of the above statements are correct?
Correct answer · Option 3
(A), (B) and (C) only
Explanation
In an elliptical orbit, speed and distance vary from point to point, so KE and PE vary, though their sum (total energy) remains constant. Hence (3) is incorrect; (A), (B), and (C) are correct.
