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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
Match the following
| Column A | Column B |
| (a). Human body | (1). electric bell |
| (b). Silk thread | (2). current |
| (c). Charge in motion | (3). conductor |
| (d). soft iron | (4). electromagnet |
| (e) . Electromagnet | (5). insulator |
Write true or false of the following statement.
Magnetic keeper is a wooden piece.
What is the magnetic induction? Explain with the help of a diagram.
Define the following term regarding a bar magnet:
Magnetic axis
Fill in the blank.
The perpendicular bisector of the line joining the two poles of a magnet is called ...................
When magnetic material is taken close to a magnet, the material acquires ______.
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Why are E and F placed in contact with the poles of the magnets as shown in the diagram?
Explain the mechanism by which unmagnetized iron nails get attracted to a magnet when brought near it.
Define the term Magnetic axis
Define the following term:
Angle of dip
