Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : A bar magnet dropped through a metallic cylindrical pipe takes more time to come down compared to a non-magnetic bar with same geometry and mass. Reason R : For the magnetic bar, Eddy currents are produced in the metallic pipe which oppose the motion of the magnetic bar. In the light of the above stateme

Step-by-step solution

Due to change in flux, eddy current is produced which opposes the motion in the metallic pipe for the bar magnet. Eddy currents are loops of electrical current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. Hence, R is the correct explanation and both statements are true.