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प्रश्न
It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.
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उत्तर
The blade of a pencil sharpener is made of iron. Iron is a magnetic material. Since magnets can attract objects made of magnetic materials, a pencil sharpener gets attracted towards both poles of a magnet.
संबंधित प्रश्न
Write true or false of the following statement.
Artificial magnets are weaker than the natural magnets.
Select the correct answer
Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
Select the correct answer
The artificial magnet used to detect direction in the laboratory is
What are natural and artificial-magnets?
Name the material of the core of an electromagnet for temporary magnet.
Tick the most appropriate answer.
A permanent magnet can be demagnetized by
State if the following statement is true or false. Correct the statement if it is false.
Temporary magnets are made of cobalt.
Give a reason for the following.
Electromagnets are temporary magnets.
Answer the following in detail.
Distinguish between a temporary magnet and a permanent magnet.
Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.
| Column I | Column II |
| N - N | ______ |
| N - ______ | Attraction |
| S - N | ______ |
| ______ - S | Repulsion |
