What happens if vary change the distance between the magnet and the nails?

If you change the distance between the magnet and the nails, the strength of the magnetic force acting on the nails will vary. As the distance increases, the magnetic force decreases, making it less likely for the nails to be attracted to the magnet. Conversely, decreasing the distance enhances the magnetic pull, allowing the nails to be drawn to the magnet more effectively. This phenomenon illustrates the inverse square law of magnetism, where force weakens with increased distance.