A student tries to pick up a metal object with a magnet, but the magnet is too far away. What can he change in order to successfully pick up the object?

Question

Rotate the magnet so the center is facing the object
Get a larger magnet with a larger magnetic field
Rotate the magnet so the opposite pole is facing the object
Get a smaller magnet with a smaller magnectic field

Answer 1

To successfully pick up the metal object with a magnet, the student can get a larger magnet with a larger magnetic field. A larger magnet can have a stronger magnetic field, which increases the pull on the metal object even at a greater distance.

The other options (rotating the magnet or using a smaller magnet) would not increase its effectiveness at a distance and might not help in picking up the object successfully.