If a magnet is dropped through a vertical hollow copper tube then

Question

If a magnet is dropped through a vertical hollow copper tube then (A) the time taken to reach the ground is longer than the time taken if the tube was made out of plastic (B) the magnet will get attracted and stick to the copper tube (C) the time taken to reach the ground is longer than the time taken if the tube was made out of stainless steel (D) the time taken to reach the ground does not depend on the radius of the copper tube

Tardigrade Admin · Accepted Answer

When the magnet is dropped in a hollow copper tube vertically, Emf is induced in tube and this pushes the magnet upward. But for plastic tube, no such emf is induced.

Q. If a magnet is dropped through a vertical hollow copper tube then

the time taken to reach the ground is longer than the time taken if the tube was made out of plastic

the magnet will get attracted and stick to the copper tube

the time taken to reach the ground is longer than the time taken if the tube was made out of stainless steel

the time taken to reach the ground does not depend on the radius of the copper tube

the magnet will be repelled away by the tube

When the magnet is dropped in a hollow copper tube vertically, Emf is induced in tube and this pushes the magnet upward. But for plastic tube, no such emf is induced.