The time period of a thin bar magnet is T. It is cut into 'n' equal parts by cutting it normal to its length. What will be the time period of each of them in the same field?

Explanation

To solve the problem of finding the time period of each part of a thin bar magnet after it is cut into 'n' equal parts, we will follow these steps:

### Step 1: Understand the Original Time Period
The time period \( T \) of the original thin bar magnet is given by the formula:
\[ T = 2\pi \sqrt{\frac{I}{m \cdot B}} \]
where:
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