A magnet with moment M is given. If it is bent into a semicircular form, its new magnetic moment will be:

Options

A. `M//pi`
B. `M//2`
C. `M`
D. `2M//pi`

Explanation

To find the new magnetic moment of a magnet that has been bent into a semicircular form, we can follow these steps:

### Step 1: Understand the initial conditions
- We are given a magnet with a magnetic moment \( M \).
- The length of the magnet is denoted as \( L \).

### Step 2: Determine the pole strength
- The pole strength \( p \) of the magnet can be calculated using the formula:
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