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प्रश्न
Tick the most appropriate answer.
A permanent magnet can be demagnetized by
विकल्प
hammering
heating
rough handling
all of these.
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उत्तर
all of these.
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संबंधित प्रश्न
Write true or false of the following statement.
Artificial magnets are weaker than the natural magnets.
Write true or false of the following statement.
Permanent magnets get easily demagnetised.
Select the correct answer
Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
What are natural and artificial-magnets?
Describe the method by which an iron bar can be made a magnet.
State three differences between the temporary and permanent magnets.
Tick the most appropriate answer.
Temporary magnets are made of
Give a reason for the following.
Electromagnets are temporary magnets.
Answer the following in detail.
Distinguish between a temporary magnet and a permanent magnet.
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.
