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प्रश्न
You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet.
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उत्तर
There are two techniques to recognise magnets.
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Take both metal bars and place them in the iron filings, then remove them immediately. The magnet will be filled with iron filings, while the regular metal bar will have no filings.
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Place a magnet near each of the metal bars one at a time. The magnetic bar that attracts or repels the magnet is magnetic, whilst the other is not.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
The alloys called ______ and ______ are used for making industrial magnets.
With whom should I pair up?
| Group 'A' | Group 'B' |
| (a) Compass | 1. The highest magnetic force |
| (b) The door of a cupboard | 2. Like poles |
| (c) Repulsion | 3. A magnet |
| (d) Magnetic pole | 4. A magnetic needle |
Select the correct option:
The substance which form a strong temporary magnet is:
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Mark on the diagram the poles of the second magnet,
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
Define the following term:
Geographic meridian
The strongest natural magnet is ______.
Define artificial magnet.
