Choose the incorrect statements from the following:

detailed solution

Correct option is A

Statement (1) is incorrect. There is no method by which a body can be shielded from the gravitational field of another body. Gravitational force is independent of medium between bodies. Statement (2) is correct. Statement (3) is incorrect. As the earth rotates about its axis, a body on the surface of the earth also rotates with it. Since the body is in a rotating (non-inertial) frame. It experiences an outward centrifugal force against the inward force of gravity. As a result, the acceleration due to gravity decreases due to rotation. ∵gϕ=g-Rω2cos2ϕStatement (4) is incorrect. The forces are equal in magnitude but opposite in direction. Gravitational force is action and reaction pair. Hence, choices (1), (3) and (4) are wrong.