1.Repulsion between a magnet and another object indicates that
(a) the latter is made of a metal that is non-magnetic
(b) the north pole of the former and the south pole of the latter are in contact with each one
(c) the other object is also a magnet.
(d) the other object is made up of magnetic substance.
Answers
Answer:
Magnetic Field,
The term magnetism comes from the region of Magnesia, a city in Western Turkey, where Greeks found lodestones, which attracted iron pieces across the space. It is also observed that, magnets attract as well as repel. We can explain this dual nature of magnetic force by proposing that each magnet has two poles, north pole (N) and south pole (S). You will observe two things during the activities:
1) When two magnets are brought near each other, like poles repel; opposite poles attract.
2) When a magnet is brought near a piece of iron, the iron also gets attracted to the magnet, and it acquires the same ability to attract other pieces of iron.
We like to represent this force effect of a magnet on iron-like objects with a concept called magnetic field. The concept of field can be best understood if we remember the gravitational force of Earth on object near it. We say that the mere presence of Earth sets up gravitational field in the surrounding space, and that we can represent this gravitational force effect with lines starting from Earth and radially diverging away to infinity.
Answer:
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