Bar magnet produces a magnetic field of `1.5 xx 10^(-4) T` at a point on its axis, which is at a distance 15 cm away from the centre of magnet. If length and area of cross section of magnet are 1 cm and `1 cm^2` respectively then find intensity of magnetization of bar magnet.

Explanation

To find the intensity of magnetization of the bar magnet, we will follow these steps:

### Step 1: Write down the formula for the magnetic field on the axis of a bar magnet.
The magnetic field \( B \) at a distance \( d \) from the center of a bar magnet on its axis is given by the formula:
\[ B = \frac{\mu_0}{4\pi} \cdot \frac{2m}{d^3} \]
where:
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