Each piece will become a separate magnet having north and south pole
Magnetic property will be destroyed in both the pieces completely
Longer piece only will have magnetic property with north and south pole on either end
One piece will have only north pole and the other piece will have only south pole
increase
decrease
becomes zero
remain same
Alnico
Manganese
Copper
Bismuth
Alnico is having higher retentivity of magnetism.
electromagnets
permanent magnets
bar magnets
para magnets
Heating effect
Magnetic effect
Chemical effect
Thermal effect