Advertisements
Advertisements
प्रश्न
Take a glass of water with a few pins inside. How will you take out the pins without dipping your hands into water?
उत्तर
If we keep a strong bar magnet above the glass of water, all pins inside the water come up and attract the magnet.
APPEARS IN
संबंधित प्रश्न
You are provided with an iron needle. How will you magnetize it?
What are the objects affected by a magnetic field?
What are the uses of magnets?
What type of magnet is used in the Mangle train?
What is meant by a mag-stripe?
Write a note on:
Magstripe:
Three magnets A, B, and C were dipped one by one in a heap of iron filing. Fig. 13.3 shows the amount of iron filings sticking to them.
The strength of these magnets will be
Describe the steps involved in magnetising an iron strip with the help of a magnet.
Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in Fig. 13.7.
What inference could he draw from this observation? Explain.
Suggest an arrangement to store a U shaped magnet. How is this different from storing a pair of bar magnets?
