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प्रश्न
Tick the most appropriate answer.
A permanent magnet can be demagnetized by
पर्याय
hammering
heating
rough handling
all of these.
उत्तर
all of these.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Temporary magnets are usually made up of .................
Select the correct answer
The artificial magnet used to detect direction in the laboratory 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.
Name the material of the core of an electromagnet for temporary magnet.
Tick the most appropriate answer.
Temporary magnets are made of
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.
You are given an iron strip. How will you make it into a magnet?
