NEET Physics Orbital Motion Assertion Reason Question
Assertion (A): The orbital speed of a satellite is constant for a circular orbit around Earth. | Reason (R): Kepler’s laws of planetary motion apply to satellites orbiting Earth.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
Kepler's laws, which apply to both planets and satellites, imply that a satellite in a circular orbit maintains a constant speed. This is because the gravitational force provides the necessary centripetal force, resulting in uniform circular motion.
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