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 brought near them.
$(v)$. Bar magnets always point towards North-South direction.
$(vi)$. A compass can be used to find East-West direction at any place.
$(vii)$. Rubber is a magnetic material.

AcademicPhysicsNCERTClass 6

$(i)$. A cylindrical magnet has only one pole.     

[False]

Because every magnet has two poles named as north pole and the south pole.


$(ii)$. Artificial magnets were discovered in Greece.     

[False]

The only natural magnet was discovered in Greece. Sturgeon,  an English physicist invented the electromagnet in 1824. This electromagnet was made of 18 turns of bare copper wire.


$(iii)$. Similar poles of a magnet repel each other.   [True]


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

[False]

A magnet bar contains maximum magnetic strength near its ends, so iron filing must have been stuck near its ends.


$(v)$. Bar magnets always point towards North-South direction.

[True]

When a bar magnet is suspended freely, it always points towards North-South direction.


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

[True]

A compass determines the North-South direction. Once North-South direction is found, then it is very easy to find East-West direction at any place.


$(vii)$. Rubber is a magnetic material.

[False]

As rubber does not get attracted by a magnet, so it is a non-magnetic material.

raja
Updated on 10-Oct-2022 13:31:52

Advertisements