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प्रश्न
“Poles exist in pair”. Comment on this statement ?
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उत्तर
The magnetic poles always exist in pairs. It is not possible to separate the two poles of a magnet.
If a bar magnet is broken at the middle in two parts each part is found to be a magnet. Each part has the property to attract the small iron pieces. Each part rests in the North-South direction when suspended such as to swing freely. This shows that the new poles are formed at the broken ends.
If these pieces are broken again and again, each part will still found to be a complete magnet. Each part contains both the poles (N-pole and S-pole). Thus, the two poles of a magnet exist simultaneously.
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संबंधित प्रश्न
Fill in the blank
Like poles ______ each other and unlike poles _____
Write true or false of the following statement.
Magnetic poles occur in pairs.
What is the magnetic induction? Explain with the help of a diagram.
Define the following term regarding a bar magnet:
Magnetic axis
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
Give scientific reason:
Soft iron is used to make electromagnets.
People who made mariner’s compass for the first time.
Artificial magnets are made in different shapes such as ______, _____ and _______.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
