Question

is permanent magnet can discharge if no give reason if yes give reason

Answer 1

Yes it can if it falls from a great height or after it is hammered by a lot of force hence we conclude that a permanent magnet can also get discharged

Answer 2

Yes, Heat. One factor that can cause demagnetization to occur is temperature changes, particularly very extreme temperature changes. ... As the temperature increases, at a certain point called the Curie temperature, a magnet will lose its strength completely.