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प्रश्न
Which magnet will you use?
A window shutter opens and shuts continuously in the wind.
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उत्तर
Permanent magnet can be used to stop the continuous shuttering of the window in the wind.
संबंधित प्रश्न
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
What is declination ? Draw a diagram to show the angle between the declination and true direction of geographic north.
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 |
Answer the following in detail.
List four methods of magnetizing a magnetic substance.
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
Define the following term:
Magnetic meridian
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
What will happen when we place magnets near cell phones, computers, and DVDs?
Define natural magnet.
