In case of planets the necessary acceleration is provided by______________?
Correct answer: A. Gravitational force
- A. Gravitational force
- B. Frictional force
- C. Coulomb force
- D. Centripetal force
Explanation
A planet needs centripetal acceleration to remain in orbit, and the gravitational force of the Sun provides this inward force. Friction is absent in space, while Coulomb force does not control planetary orbits. The likely mistake is choosing centripetal force, which describes the required net inward force rather than identifying its physical source here.
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