Advertisements
Advertisements
प्रश्न
Which magnet will you use?
A window shutter opens and shuts continuously in the wind.
Advertisements
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 ?
Answer the following in detail.
Write a short note on the theory of magnetism.
If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?
Define the following term:
Magnetic meridian
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Match the following.
| Magnetite | Magnetic lines |
| A tiny pivoted magnet | Natural magnet |
| Cobalt | Compass box |
| Closed curves | Ferromagnetic material |
| Bismuth | Diamagnetic material |
