Physics
A student was studying about the properties of magnets. He compiled his notes in a table. However, there were some mistakes in the table. Correct the given table.
| Property of Magnets | Explanation | Correction(s) |
|---|---|---|
| Attractive property | A magnet attracts all kinds of materials. | |
| Directive property | The end of the magnet pointing towards the geographical north is the south pole and the end of the magnet pointing towards the geographical south is the south pole. | |
| Coexistence of poles | When a magnet is broken into a half, the north pole and south pole are separated. | |
| True test for magnetism | Like poles of the magnet attract each other while unlike poles repel each other. | |
| Strength of the magnet | The strength of the magnet is uniform throughout its length. |
Answer
| Property of Magnets | Explanation | Correction(s) |
|---|---|---|
| Attractive property | A magnet attracts all kinds of materials. | A magnet attracts only magnetic materials like iron. |
| Directive property | The end of the magnet pointing towards the geographical north is the south pole and the end of the magnet pointing towards the geographical south is the south pole. | The end of the magnet pointing towards the geographical north is the north pole. |
| Coexistence of poles | When a magnet is broken into a half, the north pole and south pole are separated. | When a magnet is broken into a half, each piece has a north pole and a south pole. |
| True test for magnetism | Like poles of the magnet attract each other while unlike poles repel each other. | Like poles of the magnet repel each other while unlike poles attract each other. |
| Strength of the magnet | The strength of the magnet is uniform throughout its length. | The strength of a magnet is maximum at its poles and minimum at its centre. |
Related Questions
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(b) What does this picture represent?
(c) What happens when the switch is turned off?
(d) Explain why does this happen.
Observe the given picture carefully and answer the following questions.
(a) What do you observe?
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Roshan's parents gifted him magnets on his birthday. His parents told him that magnets could attract objects. He played with those magnets all day and experimented by attracting different materials onto it. He noticed that some materials got attracted to it while some didn't. After a few days, his magnets were not working well.
Now, answer the following questions.
(a) What materials do you think got attracted to the magnets?
(b) What materials do you think didn't get attracted to the magnets?
(c) Why do you think his magnets stopped working?
(d) What should Roshan do to fix his magnets?
Why do you think dropping a magnet demagnetises it?