[" A magnet is dropped down in "],[" infinitely long vertical copper "],[" tube then "]

A magnet is dropped down an infinitely long vertical copper tube

A magnet is dropped down an infinitely long vertical copper tube

A magnet is dropped down an infinitely long vertical copper tube

A magnet is dropped down an infinitely long vertical copper tube. Then

If a magnet is dropped through a long thick walled vertical copper tube, the magnet attains constant velocity after some time. Explain.

(A): A bar magnet is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity. If the tube is heated, the terminal velocity gets increased. (R) : The terminal velocity depends on eddy current produced in bar magnet.