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प्रश्न
You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them ?
उत्तर
Take first bar and suspend it in a stand with the help of a thread. So that it is free to rotate in horizontal plane. Note the direction in which it sets itself. If the direction is North and South it may be magnet. Again rotate it, if this time again it sets itself in north and south direction, it is a magnet, otherwise it is iron.
Now repeat above experiment with second bar and in the same way find it if it sets always in north and south direction then it will be a magnet.
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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 |
“Poles exist in pair”. Comment on this statement ?
What is the magnetic induction? Explain with the help of a diagram.
Define the following term regarding a bar magnet:
Magnetic field
Answer the following in detail.
Write a short note on the theory of magnetism.
Select the correct option:
The place around a magnet where its influence can be detected is called:
One of the following is an example for a permanent magnet.
Give the uses of magnets in everyday life.
