Concepts Of Physics MCQ Edition [Volume 2]PhysicsMagnetic Properties of Matter
A paramagnetic material is placed within a magnetic field. The field is elevated until the magnetization attains a constant value. If the temperature is subsequently lowered, the magnetization will
Options
- Adecrease
- Beither increase or decrease
- Cincrease
- Dremain constant
Correct answer
D. remain constant
Step-by-step solution
When the magnetic field is elevated until the magnetization attains a constant value, the paramagnetic material achieves magnetic saturation. At magnetic saturation, all the atomic magnetic dipoles are perfectly aligned in the direction of the external magnetic field, and the magnetization reaches its maximum possible value, M = N , where N is the number of atoms per unit volume and is the magnetic moment of each atom. Lowering the temperature reduces thermal agitation, which normally opposes the alignment of dipol