Question

1.Akshat heated the bar magnet to a very high
temperature. He then brought the magnet near an iron
object and found that it did not attract iron object. What
could be the reason?

Answer 1

Answer:

Magnetized metal objects lose their magnetism if the objects become sufficiently hot. With increasing temperature, the atoms in a metal vibrate more energetically; eventually this causes the atoms to lose their magnetic alignment and any magnetic field the metal posssed

Answer 2

Answer:

When heated above 176° Fahrenheit (80° Celsius), magnets will quickly lose their magnetic properties. The magnet will become permanently demagnetized if exposed to these temperatures for a certain length of time or heated at a significantly higher temperature (Curie temperature).