Question

Write true or false
a. There is only one pole in a cylindrical magnet
b. In a magnet, similar poles repel each other
c. The natural magnets were first discovered in Greece
d. A Compass can also be used to find East-West direction at any location
e. Plastic is a magnetic material.
f. When a bar magnet is brought near a pile of iron fillings, they tend to stick at the middle
Of the bar magnet rather than the ends.
g. A bar magnet when suspended freely in air always point in the North-South direction

Answer 1

Answer:

Solution:

(i) False; A magnet of any shape always has two poles: a north pole and south pole.

(ii) False; Natural magnets were discovered in Greece.

(iii) True

(iv) False; Maximum iron filings stick at the two ends of the magnet as the magnetic strength is maximum at the ends or poles of a magnet.

(v) True

(vi) True; The needle of a magnetic compass always points towards the North−South direction. If the North−South direction is known, then the East−West direction can also be determined which is perpendicular to the compass needle.

(vii) False; Rubber does not get attracted by a magnet. Therefore, it is not a magnetic material.