Rankers Physics

Magnetic Properties of Matter: Practice Problem & Solution

31. Nickel shows ferromagnetic property at room temperature. If the temperature is increased beyond Curie temperature, then it will show: (2007)
Anti ferro-magnetism
No magnetic property
Diamagnetism
Paramagnetism

Solution Explained:

To solve this problem, we apply the core principles of Magnetic Properties of Matter. Understanding the underlying formula is key to arriving at the correct answer below:

When a ferromagnetic substance like nickel is heated beyond its Curie temperature ($T_C$), domain alignment is disrupted by thermal energy, and it behaves as a paramagnetic substance.

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Practice Questions

Explore conceptually related problems to test your knowledge.

1. To increase the current sensitivity of a moving coil galvanometer, we should:
2. A charge particle having mass \(m\) and charge \(q\) moving with speed \(v\) in uniform transverse magnetic field \(B\). The radial acceleration of charge particle will be
3. The magnetic moment produced in a substance of \(1\text{ gm}\) is \(6 \times 10^{-7}\text{ A-m}^2\). If its density is \(5\text{ gm/cm}^3\), then the intensity of magnetisation in \(A/m\) will be:
4. Assertion (A): If an electron is not deflected while passing through a certain region of space, then only possibility is that there is no magnetic region. Reason (R): Force is directly proportional to the magnetic field applied.  
5. Assertion (A): Soft iron is used as transformer core. Reason (R): Soft iron has narrow hysteresis loop.