INTEXT QUESITONS 17.1
1. Define magnet and list its properties?
Answer: A magnet is an object or material that produces a magnetic field and attracts magnetic substances such as iron, nickel, cobalt, and some of their alloys.
The properties of magnet are :
(i) Attracts iron towards itself.
(ii) Freely suspended magnet always rests at the north-south direction.
(iii) Like poles repel while unlike poles attract.
(iv) If iron pieces are brought near a strong magnet they also start behaving as magnets.
(v) The poles of a magnet cannot be separated.
2. What happen, with the properties of magnet when it is broken into two pieces?
Answer: When a magnet is broken into two pieces, each piece becomes a new magnet with its own north pole and south pole. The magnetic properties remain; separate magnetic poles cannot be obtained by breaking a magnet.
3. Name the part of telephone where magnet is used?
Answer: The magnet is used in the speaker of the telephone handset.
4. Hang the bar magnet with the string, it will always rest in which directions
(i) East-west (ii) West-south (iii) North-south (iv) North-east
Answer: (iii) North–south .
[ When a bar magnet is hung freely with a string, it always comes to rest in the north–south direction.]
5. Do magnetic field exist throughout space?
Answer: Yes, but their strength depends on where you are
6. The north pole, magnetic needle points towards earth’s
(i) North pole (ii) South pole
(iii) Centre (iv) None of the above
Answer: (ii) South pole .
[ The north pole of a magnetic needle points towards the Earth’s magnetic south pole, which is near the geographic North Pole.]
7. What are magnetic poles?
Answer: Magnetic poles are the surfaces from which the invisible line of magnetic field emanate and connect on return to the magnet.
Reach the learning platform using the same contact details shown on the source page.
HATIGAON,GUWAHATI,ASSAM 781038
mylearnedu@gmail.com
Explore school board courses, science stream preparation, and competitive exam support from one platform.