Question

Exercises
A Answer the following in not more than 20 words.
1. How were natural magnets used in olden days? By what name was a magnet known because of
this?
2. Name three elements that can be permanently magnetised.
3. Which of the following are magnetic?
Aluminium, copper, iron, sulphur, magnesium, manganese, cobalt
4. Where in a magnet is its strength the maximum?
5. How do the poles of magnets behave when brought close to each other?
6. How can you demagnetise a permanent magnet?​

Answer 1

Explanation:

5. when the likes poles of a magnet are bought near to each other they repel...and when the opp. poles of the magnet are bought near each other they attract . this is how a magnet behaves when bought close to each other.

4. the maximum strength in a magnet are at its poles (north and south ) .

3. iron ,,manganese,,cobalt

2. nickel ,, cobalt ,,,iron

1. natural magnets were used to find direction in earlier days.

those days it was known as magnitite.

6. Magnet can de demagnetised by heating and applying a strong magnetic field.

hope it helps !!!

Answer 2

Answer:

1. How were natural magnets used in olden days? By what name was a magnet known because of

this?