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Mindmap: Magnetism and Matter | Physics Class 12 - NEET

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FAQs on Mindmap: Magnetism and Matter - Physics Class 12 - NEET

1. What is magnetism?
Ans. Magnetism is a phenomenon that arises from the force exerted by magnets, objects that produce magnetic fields. It involves the attraction or repulsion between magnetic materials, such as iron or steel, and is caused by the motion of electric charges within these materials.
2. How does magnetism affect matter?
Ans. Magnetism can affect matter in various ways. When a magnetic field is applied to a material, it can cause the alignment of the material's atomic or molecular magnets, resulting in the material becoming magnetic. This alignment can also cause changes in the material's properties, such as its electrical conductivity or mechanical strength.
3. What are the different types of magnetism in matter?
Ans. There are several types of magnetism in matter, including ferromagnetism, paramagnetism, and diamagnetism. Ferromagnetic materials, such as iron or nickel, have permanent magnetism and can be magnetized. Paramagnetic materials are weakly attracted to magnets and become magnetized in the presence of a magnetic field. Diamagnetic materials, on the other hand, are weakly repelled by magnets and do not retain any magnetization.
4. How is magnetism used in everyday life?
Ans. Magnetism is widely used in everyday life. It is used in various electrical devices, such as motors, generators, and transformers. Magnetic storage devices, like hard drives and magnetic tapes, are used for data storage. Magnets are also used in medical equipment, such as MRI machines, and in various industrial applications, including magnetic separation and sorting processes.
5. How can magnetism be generated and controlled?
Ans. Magnetism can be generated by passing an electric current through a coil of wire, creating an electromagnet. The strength of the magnetism can be controlled by varying the current passing through the coil. Permanent magnets, on the other hand, are made by aligning the magnetic domains within a material in a specific direction. The strength of a permanent magnet depends on the material used and the manufacturing process.
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