A thin bar magnet has dipole moment M . If this is bent in the form of semicircle , then find the new dipole moment .

Explanation

To find the new dipole moment of a thin bar magnet when it is bent into the form of a semicircle, we can follow these steps:

### Step 1: Understand the initial dipole moment
The dipole moment \( M \) of a thin bar magnet is given by the formula:
\[ M = m \cdot x \]
where:
...