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Select the incorrect alternative (s).

When a ferromagnetic material goes through a complete cycle of magnetisation, the magnetic susceptibility 

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Important Questions on Matter and Magnetism

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Alpha Question Bank for Engineering: Physics>Chapter 26 - Matter and Magnetism>Exercise - 1>Q 12
The material for making permanent magnets should have
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Alpha Question Bank for Engineering: Physics>Chapter 26 - Matter and Magnetism>Exercise - 1>Q 13

(a) Soft iron is a conductor of electricity.

(b) It is a magnetic material.

(c) It is an alloy of iron.

(d) It is used for making permanent magnets. State whether

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Alpha Question Bank for Engineering: Physics>Chapter 26 - Matter and Magnetism>Exercise - 2>Q 1

Consider different orientations of a bar magnet lying in a uniform magnetic field as shown below. The potential energy is maximum in orientation

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Alpha Question Bank for Engineering: Physics>Chapter 26 - Matter and Magnetism>Exercise - 2>Q 2
A magnetic needle (small magnet) is kept in a non-uniform magnetic field. It.
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Alpha Question Bank for Engineering: Physics>Chapter 26 - Matter and Magnetism>Exercise - 3>Q 1
Needles N1, N2 and N3 are made of a ferromagnetic, a paramagnetic and a diamagnetic substance, respectively. A magnet when brought close to them will
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Alpha Question Bank for Engineering: Physics>Chapter 26 - Matter and Magnetism>Exercise - 3>Q 2

Relative permittivity and permeability of a material are ε r and μ r , respectively. Which of the following values of these quantities are allowed for a diamagnetic material?