Question

Above Curie temperature :

• A. a ferromagnetic substance becomes paramagnetic
• B. a paramagnetic substance becomes diamagnetic
• C. a diamagnetic substance becomes paramagnetic
• D. a paramagnetic substance becomes ferromagnetic

Answer 1

Answer: (A)

a ferromagnetic substance becomes paramagnetic

Answer 2

The temperature at which ferromagnetic materials cease to be ferromagnetic and turn paramagnetic is known as the Curie temperature. Above Curie's temperature, there is no net magnetization because the atoms' magnetic moments are randomly oriented and cancel each other out. The magnetic moments of the atoms align and the substance becomes magnetized when a ferromagnetic material is cooled below its Curie temperature.

Therefore, the correct option is (A): a ferromagnetic substance becomes paramagnetic