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प्रश्न
Give a reason for the following.
Iron is a magnetic substance.
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उत्तर
Iron is a magnetic substance because it gets attracted by a magnet.
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संबंधित प्रश्न
“Poles exist in pair”. Comment on this statement ?
How are the magnets kept safely? What is the role of keepers in storing the magnets?
Answer the following.
Can you bring two similar poles of two different magnetic close together easily? Why?
Tick the most appropriate answer.
The surest test of magnetism is
Define the following term regarding a bar magnet:
Magnetic axis
How will you do this?
Determine whether a material is magnetic or non-magnetic.
How will you do this?
Explain that a magnet has a certain magnetic field.
If a bar magnet is cut into equal pieces by cutting it at right angles to its axis at two places, ______ bar magnets are formed, and a total of _____ poles are formed.
Fill the blank spaces in the table given below:
| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Name the metal used for E and F.
