Question

If action force acting on a body is gravitational in nature, the reaction force:

• A. may be a contact force
• B. must be gravitational too
• C. may be a gravitational or contact force
• D. may be a force of any origin

Answer 1

The correct option is B must be gravitational too

By Newton's third law, every action has an equal and opposite reaction.
Therefore, if a force acting on a body is gravitational in nature, the same must be true for the reaction force which acts as an action force on other body.