Give reason for the following "Maximum number of iron filings always stick to the end of the magnet".

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Solution

The magnetic lines of forces or the magnetic field are stronger near the ends of the magnet
All the field lines come and join in the pole ends of the magnet. So the maximum number of iron filings stick to the end of the magnet.

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Question 10

Four identical iron bars were dipped in a heap of iron filings one by one. Fig. shows the amount of iron filings sticking to each of them.

(a) Which of the iron bar is likely to be the strongest magnet?
(b) Which of the iron bars is not a magnet? Justify your answer.

State whether the following statements are ‘True’ or ‘False’.

(i) A cylindrical magnet has only one pole.

(ii) Artificial magnets were discovered in Greece.

(iii) Similar poles of a magnet repel each other.

(iv) Maximum iron filings stick in the middle of a bar magnet when it is bought near them.

(v) Bar magnets always point towards the North−South direction.

(vi) A compass can be used to find the East−West direction at any place.

(vii) Rubber is a magnetic material.

Four identical iron bars were dipped in a heap of iron filings one by one. The figure shows the number of iron filings sticking to each of them. Which of the iron bar is likely to be the strongest magnet?

Q. Maximum iron filing tends to stick at the _______ of a magnet. Also, the materials which get ________ a magnet are known as magnetic materials.

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Give reason for the following "Maximum number of iron filings always stick to the end of the magnet".

The magnetic lines of forces or the magnetic field are stronger near the ends of the magnetAll the field lines come and join in the pole ends of the magnet. So the maximum number of iron filings stick to the end of the magnet.

The magnetic lines of forces or the magnetic field are stronger near the ends of the magnet
All the field lines come and join in the pole ends of the magnet. So the maximum number of iron filings stick to the end of the magnet.