The substance which is repelled by or opposed by the applied magnetic field is
Correct answer: A. Diamagnetic
- A. Diamagnetic
- B. Paramagnetic
- C. Ferromagnetic
- D. All of these
Explanation
The correct answer is Diamagnetic. Diamagnetic substances are repelled by a magnetic field because they create an induced magnetic field in a direction opposite to that of the applied magnetic field. This is due to the paired electrons in the material that result in no net magnetic moment. In contrast, Paramagnetic substances are weakly attracted to magnetic fields due to the presence of unpaired electrons. Ferromagnetic substances are strongly attracted to magnetic fields and can become permanently magnetised. Therefore, the option 'All of these' is incorrect as it includes substances that are not repelled by a magnetic field.
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Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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