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 magnet.

Explanation

To solve the given problem, we will follow these steps:

### Step 1: Understand the given data
We have the following values:
- Magnetic field (B) at a point on the axis of the bar magnet: \( B = 1.5 \times 10^{-4} \, T \)
- Distance from the center of the magnet to the point where the field is measured: \( x = 15 \, cm = 0.15 \, m \)
- Length of the magnet: \( l = 1 \, cm = 0.01 \, m \)
- Area of cross-section: \( A = 1 \, cm^2 = 1 \times 10^{-4} \, m^2 \)
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