The correct I - H graph for a paramagnetic material will look like .

Options

A.
B.
C.
D.

Explanation

To determine the correct I-H graph for a paramagnetic material, we can follow these steps:

### Step 1: Understand the Terms
- **Intensity of Magnetization (I)**: This refers to the degree of magnetization of a material in response to an applied magnetic field.
- **Magnetic Field Intensity (H)**: This is the strength of the magnetic field applied to the material.

### Step 2: Relationship Between I and H
- For paramagnetic materials, the intensity of magnetization (I) is directly proportional to the magnetic field intensity (H). This relationship can be expressed mathematically as:
\[ I = \chi_m H \]
where \(\chi_m\) is the magnetic susceptibility of the material, which is a positive constant for paramagnetic materials.

### Step 3: Graphical Representation
- Since I is directly proportional to H, the graph of I vs. H will be a straight line passing through the origin. This indicates that as the magnetic field intensity increases, the intensity of magnetization also increases linearly.

### Step 4: Conclusion
- Therefore, the correct I-H graph for a paramagnetic material will be a straight line, which confirms that option B is correct.