A magnetic material is placed in a non-uniform magnetic field which is orienteiong z-axis having then force gradient `=(dH)/(dz)`, experienced by the material will be equal to

Explanation

To solve the problem of finding the force gradient experienced by a magnetic material placed in a non-uniform magnetic field oriented along the z-axis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Relationship**:
The magnetic field \( B \) is related to the magnetization \( M \) of the material. The relationship can be expressed as:
\[
B = \mu_0 H + M
...