When a magnet is placed on a wooden plate with some iron nails spread on it, then

Options

A. nails stick all around the magnet in a same manner
B. most of the nails stick at the centre of the magnet
C. most of the nails stick at the ends of the magnet
D. none of these

Explanation

**Step-by-Step Solution:**

1. **Understanding the Setup**: We have a wooden plate and some iron nails spread on it. A magnet is placed on top of this setup.

2. **Magnetic Properties**: Magnets have two poles: a north pole and a south pole. The magnetic field is strongest at the poles and weakest in the middle.

3. **Effect of the Magnet on Iron Nails**: When the magnet is placed on the wooden plate, the iron nails will respond to the magnetic field produced by the magnet. Iron is a magnetic material, which means it can be attracted to magnets.

4. **Distribution of Nails**: Due to the magnetic field strength being maximum at the poles of the magnet, the iron nails will stick more at the ends (poles) of the magnet rather than in the middle. This is because the magnetic force is stronger at the poles.

5. **Conclusion**: Therefore, when the magnet is placed on the wooden plate, the iron nails will stick predominantly at the ends of the magnet, and fewer nails will stick in the middle. This means that the nails will not stick uniformly around the magnet but will cluster more at the poles.

**Final Answer**: The nails will stick more at the ends of the magnet due to the stronger magnetic force at the poles.

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