Consider a copper tube and an iron tube both of finite length. Now, two identical magnets are dropped along the axis of these tubes at a time. Then which of the following statements holds good?

Question

Consider a copper tube and an iron tube both of finite length. Now, two identical magnets are dropped along the axis of these tubes at a time. Then which of the following statements holds good? (A) Magnet will come out from both the tubes simultaneously. (B) Magnet will take longer time to travel through iron tube than copper tube. (C) Magnet will take longer time to travel through copper tube than iron tube. (D) None of these.

Tardigrade Admin · Accepted Answer

In order to oppose the movement of the magnet, both the tubes will induce a current. Since copper is a good conductor of electricity than iron, more current will be induced inside it and the magnet will fall more slowly.

Q. Consider a copper tube and an iron tube both of finite length. Now, two identical magnets are dropped along the axis of these tubes at a time. Then which of the following statements holds good?

Magnet will come out from both the tubes simultaneously.

Magnet will take longer time to travel through iron tube than copper tube.

Magnet will take longer time to travel through copper tube than iron tube.

None of these.

In order to oppose the movement of the magnet, both the tubes will induce a current. Since copper is a good conductor of electricity than iron, more current will be induced inside it and the magnet will fall more slowly.