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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.
उत्तर
all of these.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
Artificial magnets are weaker than the natural magnets.
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.
Tick the most appropriate answer.
Temporary magnets are made of
Fill in the blank.
Permanent magnets are generally made of steel, cobalt, nickel, or an alloy called ...............
State if the following statement is true or false. Correct the statement if it is false.
Temporary magnets are made of cobalt.
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.
