A bar of iron buried under the earth becomes a weak magnet after some days. Give reason.

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Solution

The poles of magnets are called magnetic poles.
The geographic north and south poles of the earth's geographic poles.
When a bar of iron is buried under the earth it becomes a weak magnet because Earth also acts as a magnet and like poles repel each other.

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A bar of iron buried under the earth becomes a weak magnet after some days. Give reason.

The poles of magnets are called magnetic poles.The geographic north and south poles of the earth's geographic poles.When a bar of iron is buried under the earth it becomes a weak magnet because Earth also acts as a magnet and like poles repel each other.

The poles of magnets are called magnetic poles.
The geographic north and south poles of the earth's geographic poles.
When a bar of iron is buried under the earth it becomes a weak magnet because Earth also acts as a magnet and like poles repel each other.