The alignment of magnetic dipoles shown below `uarr darr darr uarr darr darr` represents which of the following ?

Options

A. Diamagnetism
B. Ferri magnetism
C. Ferro magnetism
D. Anti-ferromagnetism

Answer

To determine the type of magnetic alignment represented by the sequence `uarr darr darr uarr darr darr`, we need to analyze the arrangement of the magnetic dipoles.

### Step-by-Step Solution:

1. **Understanding Magnetic Dipoles**:
- Magnetic dipoles can be oriented in different ways in response to an external magnetic field. The alignment can indicate different types of magnetic behavior.

2. **Identifying the Alignment**:
- The given alignment `uarr darr darr uarr darr darr` shows a pattern where there are alternating 'up' (`uarr`) and 'down' (`darr`) orientations. This means there are some dipoles pointing in one direction (up) and others pointing in the opposite direction (down).

3. **Analyzing the Options**:
- **Diamagnetism**: Diamagnetic materials have no net magnetic moment and are weakly repelled by a magnetic field. They do not show any specific alignment like the one given.
- **Ferrimagnetism**: In ferrimagnetic materials, the magnetic moments of the domains are aligned in both parallel and anti-parallel directions but in unequal numbers. This matches the given alignment since there are more 'down' dipoles than 'up' dipoles.
- **Ferromagnetism**: Ferromagnetic materials have all dipoles aligned in the same direction, which does not match the given alignment.
- **Antiferromagnetism**: Antiferromagnetic materials have dipoles that are perfectly anti-aligned (one up, one down, etc.) in equal numbers, which also does not match the given alignment.

4. **Conclusion**:
- The alignment `uarr darr darr uarr darr darr` corresponds to **ferrimagnetism** because it shows an unequal number of dipoles aligned in opposite directions.

### Final Answer:
The alignment of magnetic dipoles `uarr darr darr uarr darr darr` represents **ferrimagnetism**.